Nazi human experimentation was a series of
medical experiments on prisoners by
Nazi Germany
Nazi Germany, officially known as the German Reich and later the Greater German Reich, was the German Reich, German state between 1933 and 1945, when Adolf Hitler and the Nazi Party controlled the country, transforming it into a Totalit ...
in its
concentration camps
A concentration camp is a prison or other facility used for the internment of political prisoners or politically targeted demographics, such as members of national or ethnic minority groups, on the grounds of national security, or for exploit ...
mainly between 1942 and 1945. There were 15,754 documented victims, of various nationalities and age groups, although the true number is believed to be more extensive. Many survived, with a quarter of documented victims being killed. Survivors generally experienced
severe permanent injuries.
At
Auschwitz
Auschwitz, or Oświęcim, was a complex of over 40 concentration and extermination camps operated by Nazi Germany in occupied Poland (in a portion annexed into Germany in 1939) during World War II and the Holocaust. It consisted of Auschw ...
and other camps, under the direction of
Eduard Wirths, selected inmates were subjected to various experiments that were designed to help German military personnel in combat situations, develop new weapons, aid in the recovery of military personnel who had been injured, and to advance
Nazi racial ideology
The German Nazi Party adopted and developed several racial hierarchical categorizations as an important part of its racist ideology (Nazism) in order to justify enslavement, extermination, ethnic persecution and other atrocities against ...
and
eugenics
Eugenics is a set of largely discredited beliefs and practices that aim to improve the genetic quality of a human population. Historically, eugenicists have attempted to alter the frequency of various human phenotypes by inhibiting the fer ...
, including the
twin experiments of
Josef Mengele
Josef Mengele (; 16 March 19117 February 1979) was a Nazi German (SS) officer and physician during World War II at the Russian front and then at Auschwitz during the Holocaust, often dubbed the "Angel of Death" (). He performed Nazi hum ...
.
Aribert Heim conducted similar medical experiments at
Mauthausen.
After the war, these crimes were tried at what became known as the
Doctors' Trial, and revulsion at the abuses perpetrated led to the development of the
Nuremberg Code
The Nuremberg Code () is a set of research ethics, ethical research principles for human experimentation created by the court in ''Doctors' trial, U.S. v Brandt'', one of the Subsequent Nuremberg trials that were held after the World War II, Seco ...
of
medical ethics
Medical ethics is an applied branch of ethics which analyzes the practice of clinical medicine and related scientific research. Medical ethics is based on a set of values that professionals can refer to in the case of any confusion or conflict. T ...
. Some Nazi physicians in the Doctors' Trial argued that military necessity justified their experiments, or compared their victims to
collateral damage
"Collateral damage" is a term for any incidental and undesired death, injury or other damage inflicted, especially on civilians, as the result of an activity. Originally coined to describe military operations, it is now also used in non-milit ...
from Allied bombings.
Experiments
The table of contents of a document from the
subsequent Nuremberg trials prosecution includes titles of the sections that document medical experiments revolving around food, seawater,
epidemic
An epidemic (from Greek ἐπί ''epi'' "upon or above" and δῆμος ''demos'' "people") is the rapid spread of disease to a large number of hosts in a given population within a short period of time. For example, in meningococcal infection ...
jaundice
Jaundice, also known as icterus, is a yellowish or, less frequently, greenish pigmentation of the skin and sclera due to high bilirubin levels. Jaundice in adults is typically a sign indicating the presence of underlying diseases involving ...
,
sulfanilamide
Sulfanilamide (also spelled sulphanilamide) is a sulfonamide antibacterial drug. Chemically, it is an organic compound consisting of an aniline derivatized with a sulfonamide group. Powdered sulfanilamide was used by the Allies in World War ...
, blood
coagulation
Coagulation, also known as clotting, is the process by which blood changes from a liquid to a gel, forming a thrombus, blood clot. It results in hemostasis, the cessation of blood loss from a damaged vessel, followed by repair. The process of co ...
and
phlegmon. According to the indictments at the subsequent Nuremberg Trials, these experiments included the following:
Blood coagulation experiments
Sigmund Rascher experimented with the effects of ''Polygal'', a substance made from
beet
The beetroot (British English) or beet (North American English) is the taproot portion of a '' Beta vulgaris'' subsp. ''vulgaris'' plant in the Conditiva Group. The plant is a root vegetable also known as the table beet, garden beet, dinner ...
and apple
pectin
Pectin ( ': "congealed" and "curdled") is a heteropolysaccharide, a structural polymer contained in the primary lamella, in the middle lamella, and in the cell walls of terrestrial plants. The principal chemical component of pectin is galact ...
, which aided blood clotting. He predicted that the preventive use of Polygal tablets would reduce bleeding from surgery or
gunshot wounds sustained during combat. Subjects were given a Polygal tablet, shot through the neck or chest, or had their limbs amputated without anesthesia. Rascher published an article on his experience of using Polygal, without detailing the nature of the human trials, and set up a company staffed by prisoners to manufacture the substance.
Bruno Weber was the head of the Hygienic Institution at
Block 10 in Auschwitz and injected his subjects with blood types that differed from their own. This caused the blood cells to congeal, and the blood was studied. When the Nazis removed blood from someone, they often entered a major artery, causing the subject to die of major blood loss.
Bone, muscle, and nerve transplantation experiments
From about September 1942 to about December 1943, experiments were conducted at the
Ravensbrück concentration camp
Ravensbrück () was a Nazi concentration camp exclusively for women from 1939 to 1945, located in northern Germany, north of Berlin at a site near the village of Ravensbrück (part of Fürstenberg/Havel). The camp memorial's estimated figure of 1 ...
for the benefit of the German Armed Forces, to study
bone
A bone is a rigid organ that constitutes part of the skeleton in most vertebrate animals. Bones protect the various other organs of the body, produce red and white blood cells, store minerals, provide structure and support for the body, ...
,
muscle
Muscle is a soft tissue, one of the four basic types of animal tissue. There are three types of muscle tissue in vertebrates: skeletal muscle, cardiac muscle, and smooth muscle. Muscle tissue gives skeletal muscles the ability to muscle contra ...
, and
nerve
A nerve is an enclosed, cable-like bundle of nerve fibers (called axons). Nerves have historically been considered the basic units of the peripheral nervous system. A nerve provides a common pathway for the Electrochemistry, electrochemical nerv ...
regeneration, and
bone transplantation from one person to another.
In these experiments, subjects had their bones, muscles and nerves removed without
anesthesia
Anesthesia (American English) or anaesthesia (British English) is a state of controlled, temporary loss of sensation or awareness that is induced for medical or veterinary purposes. It may include some or all of analgesia (relief from or prev ...
. As a result of these operations, many victims suffered intense agony, mutilation, and permanent disability.
On 12 August 1946, a survivor named Jadwiga Kamińska gave a deposition about her time at Ravensbrück concentration camp, describing how she was operated on twice. Both operations involved one of her legs and although she never describes herself as having any knowledge as to what exactly the procedure was, she explained that both times she was in extreme pain and developed a fever post-surgery but was given little to no aftercare. Kamińska describes being told that she had been operated on simply because she was a "young girl and a Polish patriot". She describes how her leg oozed pus for months after the operations.
Prisoners were also experimented on by having their
bone marrow
Bone marrow is a semi-solid biological tissue, tissue found within the Spongy bone, spongy (also known as cancellous) portions of bones. In birds and mammals, bone marrow is the primary site of new blood cell production (or haematopoiesis). It i ...
injected with bacteria to study the effectiveness of new drugs being developed for use in the battlefields. Those who survived remained permanently disfigured.
Freezing experiments
In 1941, the ''
Luftwaffe
The Luftwaffe () was the aerial warfare, aerial-warfare branch of the before and during World War II. German Empire, Germany's military air arms during World War I, the of the Imperial German Army, Imperial Army and the of the Imperial Ge ...
'' conducted experiments with the intent of discovering means to prevent and treat
hypothermia
Hypothermia is defined as a body core temperature below in humans. Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion. In moderate hypothermia, shivering stops and confusion increases. In severe ...
. There were 360 to 400 experiments and 280 to 300 victims, indicating that some victims suffered more than one experiment.
Another study placed prisoners naked in the open air for several hours with temperatures as low as −6 °C (21 °F). Besides studying the physical effects of cold exposure, the experimenters also assessed different methods of rewarming survivors.
"One assistant later testified that some victims were thrown into boiling water for rewarming."
Beginning in August 1942, at the Dachau camp, prisoners were forced to sit in tanks of freezing water for up to three hours. After subjects were frozen, they then underwent different methods for rewarming. Many subjects died in this process. Others were also forced to stand naked outside in below freezing temperatures, with many screaming in pain as their bodies froze. In a letter from 10 September 1942, Rascher describes an experiment on intense cooling performed in Dachau where people were dressed in fighter pilot uniforms and submerged in freezing water. Rascher had some of the victims completely underwater and others only submerged up to the head.
The
freezing
Freezing is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point.
For most substances, the melting and freezing points are the same temperature; however, certain substances possess dif ...
and hypothermia experiments were conducted for the Nazi high command to simulate the conditions the armies suffered on the
Eastern Front, as the German forces were ill-prepared for the cold weather they encountered. Many experiments were conducted on captured Soviet troops; the Nazis wondered whether their genetics gave them superior resistance to cold. The principal locales were
Dachau and
Auschwitz
Auschwitz, or Oświęcim, was a complex of over 40 concentration and extermination camps operated by Nazi Germany in occupied Poland (in a portion annexed into Germany in 1939) during World War II and the Holocaust. It consisted of Auschw ...
.
Sigmund Rascher, an
SS doctor based at Dachau, reported directly to ''
Reichsführer-SS
(, ) was a special title and rank that existed between the years of 1925 and 1945 for the commander of the (SS). ''Reichsführer-SS'' was a title from 1925 to 1933, and from 1934 to 1945 it was the highest Uniforms and insignia of the Schut ...
''
Heinrich Himmler
Heinrich Luitpold Himmler (; 7 October 1900 – 23 May 1945) was a German Nazism, Nazi politician and military leader who was the 4th of the (Protection Squadron; SS), a leading member of the Nazi Party, and one of the most powerful p ...
and publicised the results of his freezing experiments at the 1942 medical conference entitled "Medical Problems Arising from Sea and Winter".
Himmler suggested that the victims could be warmed by forcing them to engage in sexual contact with other victims. An example included how a hypothermic victim was placed between two naked Romani women.
[Letter from Rascher to Himmler, 17 Feb 1943 from ''Trials of War Criminals before the Nuernberg Military Tribunals, Vol. 1, Case 1: The Medical Case'' (Washington, DC: US Government Printing Office, 1949–1950), pp. 249–251.]
High altitude experiments

In early 1942, prisoners at Dachau concentration camp were used by
Sigmund Rascher in experiments to aid German pilots who had to
eject at high altitudes. A
low-pressure chamber containing these prisoners was used to simulate conditions at altitudes of up to . It was rumored that Rascher performed
vivisection
Vivisection () is surgery conducted for experimental purposes on a living organism, typically animals with a central nervous system, to view living internal structure. The word is, more broadly, used as a pejorative catch-all term for Animal test ...
s on the brains of victims who survived the initial experiment.
Of the 200 subjects, 80 died outright, and the others were murdered.
In a letter from 5 April 1942 between Rascher and Heinrich Himmler, Rascher explains the results of a low-pressure experiment that was performed on people at Dachau Concentration camp in which the victim was suffocated while Rascher and another unnamed doctor took note of his reactions. The person was described as 37 years old and in good health before being murdered. Rascher described the victim's actions as he began to lose oxygen and timed the changes in behavior. The 37-year-old began to wiggle his head at four minutes; a minute later Rascher observed that he was suffering from cramps before falling unconscious. He describes how the victim then lay unconscious, breathing only three times per minute, until he stopped breathing 30 minutes after being deprived of oxygen. The victim then turned blue and began foaming at the mouth. An autopsy followed an hour later.
In a letter from Himmler to Rascher on 13 April 1942, Himmler ordered Rascher to continue the high altitude experiments and to continue experimenting on prisoners condemned to death. He also ordered specific tests to "determine whether these men could be recalled to life". If someone condemned to death was successfully resuscitated, Himmler stated he should be "pardoned to concentration camp for life".
Sterilization and fertility experiments
From about March 1941 to about January 1945,
sterilization experiments were conducted at Auschwitz, Ravensbrück, and other places.
The purpose of these experiments was to develop a method of sterilization which would be suitable for sterilizing millions of people with a minimum of time and effort. The targets for sterilization included Jewish and Roma populations.
These experiments were conducted by means of
X-ray
An X-ray (also known in many languages as Röntgen radiation) is a form of high-energy electromagnetic radiation with a wavelength shorter than those of ultraviolet rays and longer than those of gamma rays. Roughly, X-rays have a wavelength ran ...
, surgery and various
drugs
A drug is any chemical substance other than a nutrient or an essential dietary ingredient, which, when administered to a living organism, produces a biological effect. Consumption of drugs can be via inhalation, injection, smoking, ingestio ...
. Thousands of victims were sterilized. Sterilization was not limited to these experiments, with the Nazi government already sterilizing 400,000 people as part of its
compulsory sterilization
Compulsory sterilization, also known as forced or coerced sterilization, refers to any government-mandated program to involuntarily sterilize a specific group of people. Sterilization removes a person's capacity to reproduce, and is usually do ...
program.
One prominent scientist in this domain was
Carl Clauberg, who initially X-rayed women to make sure that there was no obstruction to their ovaries. Over the next three to five sessions, he injected caustic substances into their uteruses without
anesthetics
An anesthetic (American English) or anaesthetic (British English; see spelling differences) is a drug used to induce anesthesia — in other words, to result in a temporary loss of sensation or awareness. They may be divided into tw ...
. Many died, others suffered permanent injuries and infections, and about 700 were successfully sterilized.
[Carl Clauberg (1898–1957)](_blank)
/ref> The women who stood against him and his experiments or were deemed as unfit test subjects were sent to the gas chambers.
Intravenous injections of solutions speculated to contain iodine
Iodine is a chemical element; it has symbol I and atomic number 53. The heaviest of the stable halogens, it exists at standard conditions as a semi-lustrous, non-metallic solid that melts to form a deep violet liquid at , and boils to a vi ...
and silver nitrate
Silver nitrate is an inorganic compound with chemical formula . It is a versatile precursor to many other silver compounds, such as those used in photography. It is far less sensitive to light than the halides. It was once called ''lunar causti ...
were similarly successful but had unwanted side effects such as vaginal bleeding, severe abdominal pain, and cervical cancer. Those who received cancer were vivisected, with their cervixes and wombs removed. Therefore, radiation
In physics, radiation is the emission or transmission of energy in the form of waves or particles through space or a material medium. This includes:
* ''electromagnetic radiation'' consisting of photons, such as radio waves, microwaves, infr ...
treatment became the favored choice of sterilization. Specific amounts of exposure to radiation destroyed a person's ability to produce ova or sperm, sometimes administered through deception. Many suffered severe radiation burns.
The Nazis also implemented X-ray radiation treatment in their search for mass sterilization. They gave the women abdomen X-rays, men received them on their genitalia, for abnormal periods of time in attempt to invoke infertility. After the experiment was complete, they surgically removed their reproductive organs, without anesthesia, for lab analysis.
M.D. William E. Seidelman, a professor from the University of Toronto, in collaboration with Dr. Howard Israel of Columbia University, published a report on an investigation on the medical experimentation performed in Austria under the Nazi regime. In that report, he mentions a Doctor Hermann Stieve, who used the war to experiment on live humans. Stieve specifically focused on the reproductive system of women. He would tell women their date of death in advance, and he would evaluate how their psychological distress would affect their menstruation cycles. After they were executed, he would dissect and examine their reproductive organs to investigate this hypothesis. Allegedly, some of the women were raped after they were told the date when they would be killed so that Stieve could study the path of sperm through their reproductive system. However, this has been called into question as there is no evidence that Stieve ever studied sperm migration, a subject not mentioned in his papers.
Twin research
In 1944, doctor Josef Mengele
Josef Mengele (; 16 March 19117 February 1979) was a Nazi German (SS) officer and physician during World War II at the Russian front and then at Auschwitz during the Holocaust, often dubbed the "Angel of Death" (). He performed Nazi hum ...
, who was trained in genetics and anthropology, conducted a large twin study at Auschwitz. According to Paul Weindling, records show that 582 twins were gathered by Mengele for research purposes. Mengele's interest in twins has been a subject of speculation, with some suggesting he was trying to increase the German birthrate. However, Marwell argues his interest was rooted in the established tradition of twin studies
Twin studies are studies conducted on Identical twin, identical or Fraternal twin, fraternal twins. They aim to reveal the importance of environmental and genetics, genetic influences for traits, phenotypes, and disorders. Twin research is consid ...
used to assess heritability of traits. Comparative twin studies were used throughout Nazi Germany for genetic research, and were conducted by Mengele's academic mentor Otmar van Verschuer in the German population. Mengele also commented that he was researching formation of the human body.
Twins in Mengele's research were not required to do forced labour, but were subject to regular lengthly examinations. Mengele employed educated anthropologist prisoners to collect data, who used precision instruments to measure limbs and head size, collect dental impressions, and record other anthropological details such as eye colour, hair color and texture. Blood was regularly taken for analysis. One prisoner anthropologist described the detail of Mengele's twin examinations as "excessive", but she considered it "more or less standard for the time, the norm for anthropological work".
Some witnesses describe Mengele killing some of the twins; Miklós Nyiszli
Miklós Nyiszli (17 June 1901 – 5 May 1956) was a Hungarian prisoner of Jewish heritage at Auschwitz concentration camp. Nyiszli, his wife, and young daughter, were transported to Auschwitz in June 1944. Upon his arrival, Nyiszli vo ...
testified to conducting autopsies of several twins killed by lethal injection, and another witness estimated that 100 were killed for research purposes. In contrast, an inmate anthropologist maintained that Mengele did not kill any of the twins she measured, and the 'twins father' (prison leader) said he was not aware of any being killed. An often cited figure of 200 surviving twins is derived from the soviet headcount at liberation; however this number excludes older twins who were sent on marches to other camps before liberation. Weindling states this has resulted in an "exaggerated estimate of Mengele’s scientifically motivated killing of twins".
In October 1944, Mengele intervened to stop the order of a rival SS doctor Heinz Thilo, who had selected as many as half of the twins to be killed. Mengele's twin research at Auschwitz ended in December 1944 when he fled the camp and gave no order for the twins to be killed, allowing them to live out the war for unknown reasons. Historian David G. Marwell has raised caution regarding the veracity of several rumours, such as the allegation that Mengele sewed twins together to create siamese twins, or conducted other grotesque surgeries. Weindling states that a number of "reproductive, surgical and pharmacological experiments" have been misattributed to Mengele, but were actually conducted by other doctors.
Sulfonamide experiments
From about July 1942 to about September 1943, experiments to investigate the effectiveness of sulfonamide
In organic chemistry, the sulfonamide functional group (also spelled sulphonamide) is an organosulfur group with the Chemical structure, structure . It consists of a sulfonyl group () connected to an amine group (). Relatively speaking this gro ...
, a synthetic antimicrobial agent, were conducted at Ravensbrück.[Schaefer, Naomi. ]
The Legacy of Nazi Medicine
'', ''The New Atlantis'', Number 5, Spring 2004, pp. 54–60. Wounds inflicted on the subjects were infected with bacteria
Bacteria (; : bacterium) are ubiquitous, mostly free-living organisms often consisting of one Cell (biology), biological cell. They constitute a large domain (biology), domain of Prokaryote, prokaryotic microorganisms. Typically a few micr ...
such as ''Streptococcus
''Streptococcus'' is a genus of gram-positive spherical bacteria that belongs to the family Streptococcaceae, within the order Lactobacillales (lactic acid bacteria), in the phylum Bacillota. Cell division in streptococci occurs along a sing ...
'', ''Clostridium perfringens
''Clostridium perfringens'' (formerly known as ''C. welchii'', or ''Bacillus welchii'') is a Gram-positive, bacillus (rod-shaped), anaerobic, spore-forming pathogenic bacterium of the genus '' Clostridium''. ''C. perfringens'' is ever-present ...
'' (a major causative agent in gas gangrene
Gas gangrene (also known as clostridial myonecrosis) is a bacterial infection that produces tissue gas in gangrene. This deadly form of gangrene usually is caused by '' Clostridium perfringens'' bacteria. About 1,000 cases of gas gangrene are r ...
) and ''Clostridium tetani
''Clostridium tetani'' is a common soil bacterium and the causative agent of tetanus. Vegetative cells of ''Clostridium tetani'' are usually rod-shaped and up to 2.5 μm long, but they become enlarged and tennis racket- or drumstick-shaped wh ...
'', the causative agent in tetanus
Tetanus (), also known as lockjaw, is a bacterial infection caused by ''Clostridium tetani'' and characterized by muscle spasms. In the most common type, the spasms begin in the jaw and then progress to the rest of the body. Each spasm usually l ...
. Circulation of blood was interrupted by tying off blood vessels at both ends of the wound to create a condition similar to that of a battlefield wound. Researchers also aggravated the subjects' infection by forcing wood shavings and ground glass into their wounds. The infection was treated with sulfonamide and other drugs to determine their effectiveness.
Experiments on homosexuals
The Danish endocrinologist Carl Vaernet developed an artificial male sex gland, a capsule that slowly released testosterone when implanted under the skin.[ Weindling, Paul (2015). ''Victims and Survivors of Nazi Human Experiments: Science and Suffering in the Holocaust''. ]Bloomsbury Academic
Bloomsbury Publishing plc is a British worldwide publishing house of fiction and non-fiction. Bloomsbury's head office is located on Bedford Square in Bloomsbury, an area of the London Borough of Camden. It has a US publishing office located in ...
. p. 30. . In 1944, Vaernet proposed to deputy Reich SS Physician Ernst-Robert Grawitz
Ernst-Robert Grawitz (8 June 1899 – 24 April 1945) was a German physician and an SS functionary (''Reichsarzt'', "Arzt" meaning "physician") during the Nazi era. Grawitz funded Nazi programs involving experimentation on inmates in Nazi concen ...
that the capsule could convert homosexual men into heterosexuals. At Buchenwald concentration camp, with encouragement of Heinrich Himmler and the support of camp doctor , Vaernet implanted capsules in at least ten homosexual prisoners. Vaernet claimed that "successes" with the implants occurred, presumably due to positive reports from prisoners hoping to receive a release from the camp, or knowing it would increase their odds of survival.
According to notes written by the senior doctor at Buchenwald dated 3 January 1945, at least one man died during the experiment in December 1944 "of heart failure associated with infectious enteritis and general bodily weakness". Eugen Kogon
Eugen Kogon (2 February 1903 – 24 December 1987) was a German historian and Nazi concentration camp survivor. A well-known Christian opponent of the Nazi Party, Kogon was arrested more than once and spent six years at Buchenwald concentration ...
reported that a second man died as a result of the operations due to festering inflammation of cell tissue, presumably after 3 January 1945. Little is known about the fate of the other victims; none are known to have applied for financial compensation after 1945. The hypothesis that circulating hormones determined or cured homosexuality was discredited by later scientific research, and hormonal exposure prior to birth became a far more influential hypothesis.
Castration of homosexual men was also commonly performed in Nazi Germany. This began with "voluntary" castrations, but was later performed in concentration camps and prisons. It was believed castration, which reduces male sex drive, would prevent men from being "infected" with homosexuality by gay men. This idea was most influential in Nazi beliefs about homosexuality, rather than biological (genetic or prenatal environmental) theories of homosexuality.
Homosexual and Jewish prisoners were also given experimental treatments for typhus
Typhus, also known as typhus fever, is a group of infectious diseases that include epidemic typhus, scrub typhus, and murine typhus. Common symptoms include fever, headache, and a rash. Typically these begin one to two weeks after exposu ...
at Buchenwald, for phosphorus burns at Sachsenhausen, and were used for testing opiate
An opiate is an alkaloid substance derived from opium (or poppy straw). It differs from the similar term ''opioid'' in that the latter is used to designate all substances, both natural and synthetic, that bind to opioid receptors in the brain ( ...
s and Pervitin
Methamphetamine (contracted from ) is a potent central nervous system (CNS) stimulant that is mainly used as a recreational drug use, recreational or Performance-enhancing substance, performance-enhancing drug and less commonly as a secon ...
.
Seawater experiments
From about July 1944 to about September 1944, experiments were conducted at the Dachau concentration camp to study various methods of making seawater
Seawater, or sea water, is water from a sea or ocean. On average, seawater in the world's oceans has a salinity of about 3.5% (35 g/L, 35 ppt, 600 mM). This means that every kilogram (roughly one liter by volume) of seawater has approximat ...
drinkable. These victims were subject to deprivation of all food and only given the filtered seawater. At one point, a group of roughly 90 Roma were deprived of food and given nothing but seawater to drink by Hans Eppinger
Hans Eppinger Jr. (5 January 1879, in Prague, Kingdom of Bohemia, Royal Bohemia, Austria-Hungary – 25 September 1946, in Vienna) was an Austrian physician of part-Jewish descent who performed experiments upon Nazi concentration camp prisoners.
...
, leaving them gravely injured. They were so dehydrated that others observed them licking freshly mopped floors in an attempt to get drinkable water.
A Holocaust survivor named Joseph Tschofenig wrote a statement on these seawater experiments at Dachau. Tschofenig explained how while working at the medical experimentation stations he gained insight into some of the experiments that were performed on prisoners, namely those in which they were forced to drink salt water. Tschofenig also described how victims of the experiments had trouble eating and would desperately seek out any source of water, including old floor rags. Tschofenig was responsible for using the X-ray machine in the infirmary and describes how, even though he had insight into what was going on, he was powerless to stop it. He gives the example of a patient in the infirmary who was sent to the gas chambers by Sigmund Rascher simply because he witnessed one of the low-pressure experiments.
Other experiments
In mid-1942 in Baranowicze
Baranavichy or Baranovichi is a city in the Brest Region of western Belarus. It serves as the administrative center of Baranavichy District, though it is administratively separated from the district. As of 2025, it has a population of 170,817.
...
, occupied Poland, head injury experiments were conducted in a small building behind the private home occupied by a known Nazi SD Security Service officer, in which "a young boy of eleven or twelve asstrapped to a chair so he could not move. Above him was a mechanized hammer that every few seconds came down upon his head." The boy was driven insane from the torture.[Small, Martin; Vic Shayne]
"Remember Us: My Journey from the Shtetl through the Holocaust"
p. 135, 2009. Inmates were also subjected to various diseases which were given in the form of injections. At the German concentration camps of Sachsenhausen, Dachau, Natzweiler, Buchenwald, and Neuengamme, scientists tested immunization compounds and serums for the prevention and treatment of contagious diseases, including malaria, typhus, tuberculosis, typhoid fever, yellow fever, and infectious hepatitis.
From about February 1942 to about April 1945, malaria experiments were performed on over 1,200 inmates in Dachau concentration camp. Healthy inmates had their hands and arms confined in cages filled with malaria mosquitoes.[Hulverscheidt, Marion. "German Malariology Experiments with Humans, Supported by the DFG Until 1945". ''Man, Medicine, and the State: The Human Body as an Object of Government Sponsored Medical Research in the 20th Century'', Beiträge zur Geschichte der Deutschen Forschungsgemeinschaft Volume 2. Ed. Wolfgang Uwe Eckhart. Stuttgart: Franz Steiner Verlag, 2006. , pp. 221–236.] Upon contracting the disease, they were treated with synthetic drugs, at doses ranging from high to lethal. More than half died as a result. Other inmates were left with permanent disabilities. In an affidavit, presented at the Doctors' Trial, Oswald Pohl
Oswald Ludwig Pohl (; 30 June 1892 – 7 June 1951) was a German high-ranking SS official during the Nazi era. As the head of the SS Main Economic and Administrative Office and the head administrator of the Nazi concentration camps, he was a ke ...
called the Dachau malaria experiment's the "largest experiment" and reported it as the cause for his protest to Heinrich Himmler
Heinrich Luitpold Himmler (; 7 October 1900 – 23 May 1945) was a German Nazism, Nazi politician and military leader who was the 4th of the (Protection Squadron; SS), a leading member of the Nazi Party, and one of the most powerful p ...
against such experiments because "Schilling Schilling may refer to:
* Schilling (unit), an historical unit of measurement
* Schilling (coin), the historical European coin
** Shilling, currency historically used in Europe and currently used in the East African Community
** Austrian schilling ...
continually asked for prisoners." From June 1943 until January 1945 at the concentration camps, Sachsenhausen and Natzweiler, experimentation with 'epidemic jaundice' (i.e. viral hepatitis) was conducted. Test subjects were injected with the disease in order to discover new inoculations for the condition. These tests were conducted for the benefit of the German Armed Forces. Most died in the experiments, whilst others survived, experiencing great pain and suffering.
Somewhere between December 1943 and October 1944, experiments were conducted at Buchenwald
Buchenwald (; 'beech forest') was a German Nazi concentration camp established on Ettersberg hill near Weimar, Germany, in July 1937. It was one of the first and the largest of the concentration camps within the Altreich (Old Reich) territori ...
to investigate the effect of various poisons. The poisons were secretly administered to experimental subjects in their food. The victims died as a result of the poison or were killed immediately in order to permit autopsies
An autopsy (also referred to as post-mortem examination, obduction, necropsy, or autopsia cadaverum) is a surgical procedure that consists of a thorough examination of a corpse by dissection to determine the cause, mode, and manner of death; ...
. In September 1944, experimental subjects were shot with poisonous bullets, suffered torture, and often died. Some male Jewish prisoners had poisonous substances scrubbed or injected into their skin, causing boils filled with black fluid to form. These experiments were heavily documented as well as photographed by the Nazis.
At various times between September 1939 and April 1945, many experiments were conducted at Sachsenhausen, Natzweiler, and other camps to investigate the most effective treatment of wounds caused by mustard gas
Mustard gas or sulfur mustard are names commonly used for the organosulfur compound, organosulfur chemical compound bis(2-chloroethyl) sulfide, which has the chemical structure S(CH2CH2Cl)2, as well as other Chemical species, species. In the wi ...
. Test subjects were deliberately exposed to mustard gas and other vesicant
A blister agent (or vesicant) is a chemical compound that causes severe skin, eye and mucosal pain and irritation in the form of severe chemical burns resulting in fluid filled blisters. Named for their ability to cause vesication, blister a ...
s (e.g. Lewisite
Lewisite (L) (A-243) is an organoarsenic compound. It was once manufactured in the United States, Japan, Germany and the Soviet Union for use as a Chemical warfare, chemical weapon, acting as a vesicant (blister agent) and lung irritant. Although ...
), which inflicted severe chemical burn
A chemical burn occurs when living tissue is exposed to a corrosive substance (such as a strong acid, base or oxidizer) or a cytotoxic agent (such as mustard gas, lewisite or arsine). Chemical burns follow standard burn classification and m ...
s. The victims' wounds were then tested to find the most effective treatment for the mustard gas burns. From around November 1943 to around January 1944, experiments were conducted at Buchenwald to test the effect of various pharmaceutical preparations on phosphorus
Phosphorus is a chemical element; it has Chemical symbol, symbol P and atomic number 15. All elemental forms of phosphorus are highly Reactivity (chemistry), reactive and are therefore never found in nature. They can nevertheless be prepared ar ...
burns. These burns were inflicted on prisoners using phosphorus material extracted from incendiary bomb
Incendiary weapons, incendiary devices, incendiary munitions, or incendiary bombs are weapons designed to start fires. They may destroy structures or sensitive equipment using fire, and sometimes operate as anti-personnel weaponry. Incendiarie ...
s. Some female prisoners of Block 10 were also subject to electroshock therapy. These women were often sick and underwent this experimentation before being sent to the gas chambers and killed.
Aftermath
Other documented transcriptions from Heinrich Himmler include phrases such as "These researches… can be performed by us with particular efficiency because I personally assumed the responsibility for supplying asocial
Asociality refers to the lack of motivation to engage in social interaction, or a preference for solitary activities. Asociality may be associated with avolition, but it can, moreover, be a manifestation of limited opportunities for social relati ...
individuals and criminals who deserve only to die from concentration camps for these experiments." Many of the subjects died as a result of the experiments conducted by the Nazis, while many others were murdered after the tests were completed to study the effects '' post mortem''. Those who survived were often left mutilated, with permanent disability, weakened bodies, and mental distress. On 19 August 1947, the doctors captured by Allied forces were put on trial in ''USA vs. Karl Brandt et al.'', commonly known as the Doctors' Trial. At the trial, several of the doctors argued in their defense that there was no international law regarding medical experimentation.
The issue of informed consent
Informed consent is an applied ethics principle that a person must have sufficient information and understanding before making decisions about accepting risk. Pertinent information may include risks and benefits of treatments, alternative treatme ...
had previously been controversial in German medicine in 1900, when Albert Neisser infected patients (mainly prostitutes) with syphilis
Syphilis () is a sexually transmitted infection caused by the bacterium ''Treponema pallidum'' subspecies ''pallidum''. The signs and symptoms depend on the stage it presents: primary, secondary, latent syphilis, latent or tertiary. The prim ...
without their consent. Despite Neisser's support from most of the academic community, public opinion, led by psychiatrist Albert Moll, was against Neisser. While Neisser went on to be fined by the Royal Disciplinary Court, Moll developed "a legally based, positivistic contract theory of the patient-doctor relationship" that was not adopted into German law. Eventually, the minister for religious, educational, and medical affairs issued a directive stating that medical interventions other than for diagnosis, healing, and immunization were excluded under all circumstances if "the human subject was a minor or not competent for other reasons", or if the subject had not given his or her "unambiguous consent" after a "proper explanation of the possible negative consequences" of the intervention, though this was not legally binding.
In response, Drs. Leo Alexander
Leo Alexander (October 11, 1905 – July 20, 1985) was an American psychiatrist, neurologist, educator, and author, of Austrian-Jewish origin. He was a key medical advisor during the Nuremberg Trials. Alexander wrote part of the Nuremberg Code, ...
and Andrew Conway Ivy
Andrew Conway Ivy (February 25, 1893 – February 7, 1978) was an American physician. He was appointed by the American Medical Association as its representative at the Doctors' Trial, and later fell into disrepute for advocating the fraudulent drug ...
, the American Medical Association
The American Medical Association (AMA) is an American professional association and lobbying group of physicians and medical students. This medical association was founded in 1847 and is headquartered in Chicago, Illinois. Membership was 271,660 ...
representatives at the Doctors' Trial, drafted a ten-point memorandum entitled ''Permissible Medical Experiment'' that went on to be known as the Nuremberg Code
The Nuremberg Code () is a set of research ethics, ethical research principles for human experimentation created by the court in ''Doctors' trial, U.S. v Brandt'', one of the Subsequent Nuremberg trials that were held after the World War II, Seco ...
. The code calls for such standards as voluntary consent of patients, avoidance of unnecessary pain and suffering, and that there must be a belief that the experimentation will not end in death or disability. The Code was not cited in any of the findings against the defendants and never made it into either German or American medical law
Medical law is the branch of law which concerns the prerogatives and responsibilities of medical professionals and the rights of the patient. It should not be confused with medical jurisprudence, which is a branch of medicine, rather than a br ...
. This code comes from the Nuremberg Trials where the most heinous of Nazi leaders were put on trial for their war crimes.
Modern ethical issues
Andrew Conway Ivy stated the Nazi experiments were of no medical value. Data obtained from the experiments, however, has been used and considered for use in multiple fields, often causing controversy. Some object to the data's use purely on ethical
Ethics is the philosophical study of moral phenomena. Also called moral philosophy, it investigates normative questions about what people ought to do or which behavior is morally right. Its main branches include normative ethics, applied e ...
grounds, disagreeing with the methods used to obtain it, while others have rejected the research only on scientific grounds, criticizing methodological inconsistencies. Those in favor of using the data argue that if it has practical value to save lives, it would be equally unethical not to use it. Arnold S. Relman, editor of ''The New England Journal of Medicine
''The New England Journal of Medicine'' (''NEJM'') is a weekly medical journal published by the Massachusetts Medical Society. Founded in 1812, the journal is among the most prestigious peer-reviewed medical journals. Its 2023 impact factor w ...
'' from 1977 until 1991, refused to allow the journal to publish any article that cited the Nazi experiments.
The results of the Dachau freezing experiments have been used in some late 20th-century research into the treatment of hypothermia
Hypothermia is defined as a body core temperature below in humans. Symptoms depend on the temperature. In mild hypothermia, there is shivering and mental confusion. In moderate hypothermia, shivering stops and confusion increases. In severe ...
; at least 45 publications had referenced the experiments as of 1984, though the majority of publications in the field did not cite the research. Those who have argued in favor of using the research include Robert Pozos from the University of Minnesota
The University of Minnesota Twin Cities (historically known as University of Minnesota) is a public university, public Land-grant university, land-grant research university in the Minneapolis–Saint Paul, Twin Cities of Minneapolis and Saint ...
and John Hayward from the University of Victoria
The University of Victoria (UVic) is a public research university located in the municipalities of Oak Bay, British Columbia, Oak Bay and Saanich, British Columbia, Canada. Established in 1903 as Victoria College, British Columbia, Victoria Col ...
. In a 1990 review of the Dachau experiments, Robert Berger concludes that the study has "all the ingredients of a scientific fraud" and that the data "cannot advance science or save human lives."
In 1989, the United States Environmental Protection Agency
The Environmental Protection Agency (EPA) is an independent agency of the United States government tasked with environmental protection matters. President Richard Nixon proposed the establishment of EPA on July 9, 1970; it began operation on De ...
(EPA) considered using data from Nazi research
Research is creative and systematic work undertaken to increase the stock of knowledge. It involves the collection, organization, and analysis of evidence to increase understanding of a topic, characterized by a particular attentiveness to ...
into the effects of phosgene
Phosgene is an organic chemical compound with the formula . It is a toxic, colorless gas; in low concentrations, its musty odor resembles that of freshly cut hay or grass. It can be thought of chemically as the double acyl chloride analog of ...
gas, believing the data could help US soldiers stationed in the Persian Gulf
The Persian Gulf, sometimes called the Arabian Gulf, is a Mediterranean seas, mediterranean sea in West Asia. The body of water is an extension of the Arabian Sea and the larger Indian Ocean located between Iran and the Arabian Peninsula.Un ...
at the time. They eventually decided against using it, on the grounds it would lead to criticism and similar data could be obtained from later studies on animals. Writing for ''Jewish Law'', Baruch Cohen concluded that the EPA's "knee-jerk reaction" to reject the data's use was "typical, but unprofessional", arguing that it could have saved lives.
See also
Nazi related
* List of Nazi doctors who conducted human experiments
* Bullenhuser Damm
* Jewish skull collection
* List of medical eponyms with Nazi associations
An eponym is a phrase that is derived from or based on a person's name. Medical conditions are often named after the person who first described the disorder and can also be named after the first person in whom the disorder presented or the area i ...
* Nazi eugenics
The social policies of eugenics in Nazi Germany were composed of various ideas about genetics. The Nazi racial theories, racial ideology of Nazism placed the biological improvement of the German people by selective breeding of "Nordic race, No ...
Worldwide
* Guatemala syphilis experiments
* Human radiation experiments
* Japanese human experimentation
:* Epidemic Prevention and Water Purification Department
* Human experimentation in North Korea
* Unethical human experimentation in the United States
Numerous experiments which were performed on human test subjects in the United States in the past are now considered to have been unethical, because they were performed without the knowledge or informed consent of the test subjects. Such tests ...
:* Project MKUltra (CIA)
References
Sources
*
*
Further reading
*
* Baumslag, N. (2005). ''Murderous Medicine: Nazi Doctors, Human Experimentation, and Typhus''. Praeger Publishers.
* Michalczyk, J. (Dir.) (1997). ''In The Shadow of the Reich: Nazi Medicine''. First Run Features. (video)
*
* Rees, L. (2005). ''Auschwitz: A New History''. Public Affairs.
* Weindling, P.J. (2005). ''Nazi Medicine and the Nuremberg Trials: From Medical War Crimes to Informed Consent''. Palgrave Macmillan.
*
External links
The Infamous Medical Experiments
from Holocaust Survivors and Remembrance Project: "Forget You Not"
* United States Holocaust Memorial Museum – Online Exhibition
Doctors Trial
* United States Holocaust Memorial Museum – Online Exhibition
Deadly Medicine: Creating the Master Race
* United States Holocaust Memorial Museum – Library Bibliography
Medical Experiments
Controversy regarding use of findings
* Campell, Robert. "Citations of shame; scientists are still trading on Nazi atrocities", ''New Scientist
''New Scientist'' is a popular science magazine covering all aspects of science and technology. Based in London, it publishes weekly English-language editions in the United Kingdom, the United States and Australia. An editorially separate organ ...
'', 28 February 1985, 105(1445), p. 31
Citations of shame; scientists are still trading on Nazi atrocities
http://www.medscape.com/medline/abstract/11655677]
*
Citing Nazi 'Research': To Do So Without Condemnation Is Not Defensible
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Remembering the Holocaust, Part 2
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{{Nazism
Nazi human subject research,
Political repression in Nazi Germany
Nazi war crimes
Medical experimentation on prisoners of war