The Nazi doctors performed cruel medical experiments on Jews, Romani people, people with disabilities, and others that violated medical ethics. Many experiments were not actually meant to benefit medicine and involved deliberate infection, hypothermia exposure, and other forms of torture. While some findings resulted, they did not justify the inhumane treatment. Modern medical ethics laws aim to prevent such abuses by requiring consent, minimizing harm, and only conducting research meant to help society. The Nazi experiments remain extremely unethical despite any discoveries made.