This document discusses human research ethics and risks. It defines human research as any research conducted with or about people, their data, or tissue. Research ethics are important to protect participants, maintain reputations, meet funding requirements, and fulfill professional and legal obligations. Several historical scandals highlighted the need for ethics reforms, such as studies that deceived or failed to obtain consent from participants. Key principles of ethical research include merit and integrity of research, respect for persons, beneficence, and justice. Risks in research can be physical, psychological, social, economic, legal, or involve humiliation. Assessing and justifying risks to researchers is also important. The benefits of research must outweigh the risks and be disclosed to participants.