The Most Horrifying Nazi Experiments on Humans

Looking back on the heinous medical experiments of Nazi Germany, it’s hard to have faith in the human race. From seemingly innocuous experiments on eye pigmentation to truly disgusting procedures involving the creation of conjoined twins and the examining of internal organs, all of the worst stuff is on this list. Despite their monstrous methods, the Nazis did provide incredibly helpful research in the field of hypothermia.

 

Artificial Insemination
Heinrich Himmler ordered a Nazi doctor to artificially inseminate concentration camp prisoners though various experimental methods. Dr. Carl Clauberg artificially inseminated about 300 women at Auschwitz, who were strapped down and taunted mercilessly. Clauberg told his victims that he had used animal sperm to create a monster inside of them.
Head Injury Experiment
In 1942,  experiments were conducted in which “a young boy of eleven or twelve [was] strapped 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.”
Freezing Experiments

The freezing/hypothermia experiments were conducted on men in order to simulate the conditions the armies suffered on the Eastern Front. The experiments were divided into two parts, first, to establish how long it would take to lower the body temperature to death and second how to best resuscitate the frozen victim. The test subjects were either placed in an ice bath, or stripped naked and strapped to a stretched before being left outside in the Auschwitz winter. 

See more crazy things that happened because of the military here.

Bone Grafting
The savage bone grafting experiments were an attempt to speed up the body’s regenerative process. Sections of a healthy patient’s bone would be removed from their shoulders, arms or hips, then transferred to a mutilated victim. Occasionally, entire limbs would be harvested from victims, before being killed by Evipan injection.
Incendiary Explosive Tests
Near the end of the war, the Nazis became interested in the use of incendiary weapons, which were capable of high levels of destruction. The initial explosion of an incendiary weapon containing phosphorus can produce deep third degree burns, due its properties that allow it to stick to the skin.The Nazis tested their weapons at  Buchenwald concentration camp where victims were purposefully burned with phosphorus matter, causing deep wounds and prolonged suffering.
Mass Malaria Experiments
During WWII, over 1,000 prisoners were either  bitten by malaria-infected mosquitoes or had malaria-infected blood injected directly into their veins. “All of a sudden my heart felt like it was going to be torn out,” writes victim Father Leo Miechalowski, who was subjected to the Nazi malaria experiments.
Sea Water Desalinization Experiments
Of massive interest to the Nazis was how to make sea water potable; if they could leave soldiers away at sea for long periods of time without having to provide food and water, it would be one less thing to worry about. At Dachau, a group of 44 subjects, mostly made up of gypsies, was forced to drink sea water while having their liver or spinal cord punctured for information gathering purposes.
High Altitude Experiments
In 1942, victims at the Dachau concentration camp were subjected to experiments designed to test the absolute limits of human endurance in order to benefit the German Air-force. A special low-pressure chamber was built, in which high altitude conditions could be simulated. The conditions inside the chamber were similar to those experienced by a pilot falling from 68 thousand feet, and the experiment was highly dangerous for the subjects. Almost every victim of the high altitude chamber died as a result of injuries related to extreme atmospheric exposure.
Epidemic Jaundice
Between 1943 and 1945, Nazi scientists experimented on Polish prisoners at the Sachsenhausen and Natzweiler concentration camps in order to investigate causes of hepatitis A. Victims were injected with the disease and studied through their prolonged suffering.
The Jewish Skeleton Collection
In an attempt to create an anthropological display to showcase the alleged inferiority of the “Jewish race,” Grade-A creep Heinrich Himmler sanctioned the torture and mutilation of 115 people. After gassing their victims, e ach body was sent to Hirt at the Strasbourg University Hospital, where he would remove the flesh for the skeleton collection. French troops later discovered the collection, which contained many unprocessed corpses that had their faces completely burnt off to avoid identification.
The Hungarian Twins
Nazi nightmare Doctor Mengele had a strange fascination with twins. When a pair of Hungarian brothersarrived at Auschwitz in 1943 they were forced into vats of hot water until they passed out and then had all of their body hair removed. Then, each twin was given a two liter enema before receiving an  intestinal examination with no anesthesia. They endured further torture until they were sent to a dissection laboratory and given a lethal injection, with their organs to be sent to a research institute in Berlin.
Tuberculosis Injections
To see if there was the possibility of developing an immunity to tuberculoses, Dr. Kurt Heissmeyer injected patients with  tuberculosis bacteria directly into their lungs, killing at least 200 people. 
Phosgene Gas Experiments
In an attempt to find an antidote to phosgene, a toxic gas used as a weapon during World War I, Nazi doctors exposed 52 concentration-camp prisoners to the gas at Fort Ney near Strasbourg, France. Phosgene gas causes extreme irritation to the lungs. Many of the prisoners, who according to German records were already weak and malnourished, suffered pulmonary edema after exposure, and four of them died from the experiments.
RavensbrĂĽck Bone Transplants
The Ravensbrück concentration camp was the largest concentration camp was the largest of its kind for women. Starting in 1942, SS medical doctors subjected prisoners to experiments with treating wounds with various chemical substances as well as transplanting limbs between the women. The survivors often suffered permanent physical damage. 
Sterilization Experiments
Nazi Doctor, Carl Clauberg, conducted thousands of sterilization experiments on concentration camp prisoners from the beginning of and through the mid-1940s. These experiments involved the use of surgery, pharmaceuticals, and radiation to discover an efficient and inexpensive method to sterilize hundreds of thousands people.
Mustard Gas Experiment
At various times between September 1939 and April 1945, many experiments were conducted to investigate the most effective treatment of wounds caused by mustard gas. Test subjects were deliberately exposed to mustard gas which inflicted severe chemical burns. The victims’ wounds were then tested to find the most effective treatment for the mustard gas burns.
Sulfonamide Experiments
In the early ’40s at the  RavensbrĂĽck female concentration camp, wounds, infected with gangrene and tetanus, were inflicted on subjects. 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. Infection was aggravated by forcing wood shavings and ground glass into the wounds. The infection was treated with sulfonamide and other drugs to determine their effectiveness.
Experiments with Poison

To investigate the effects of various poisons upon human beings, chemicals were added to subjects’ meals and either the subject would perish as a result of the poison or they would be killed immediately in order to permit autopsies. Around September 1944, SS doctors gave up on putting poison in the food and the victims were shot with poison bullets to hasten the effects.

Heterochromia Experimentation
For some reason, Josef Mengele was obsessed with eye color, specifically heterochromia,  a condition in which an individual’s two irises differ in color. Throughout his stay in Auschwitz, Mengele collected the eyesof his murdered victims to furnish “research material,” and famously conducted a series of experiments where he injected dye into the eye of a patient (usually a twin) to see if he could change the color of the iris.
Noma Experiments
One of Mengele’s pet projects was documenting the progression of Noma (a rapidly progressive, gangrenous infection of the mouth or genitals) in his inmates. Rather than treat the patients with antibiotics he took note as the disease spread and eventually killed the infected.
Kindersoldat
Mengele’s desire to understand twins  was in part intended to prove the supremacy of heredity over over environment. Although none of his experiments seems to actually bolster anything but nightmares. One such experiment involves sewing two Romani twins together back to back in an attempt to create conjoined twins. The children died of gangrene after several days of suffering.
Combat Wound Simulations
Dr.  Herta Oberheuser was a physician at Ravensbrück, where she experimented on children with simulated combat wounds. In her tests, Oberheuser rubbed foreign objects, such as wood, rusty nails, slivers of glass, dirt, or sawdust into their cuts.
Typhus Experiments
To investigate the effectiveness of vaccines on spotted fever (typhus), numerous victims were deliberately infected with the spotted fever virus in order to keep it alive in their bodies. Over 90 percent of the victims died as a result.
Experiments on Babies
In 1943 Ruth Elias gave birth in Auschwitz, and afterwards  an SS doctor ordered her breasts to be tied off with string as part of a medical experiment to see how long her baby daughter could live without food.