Ethical dilemmas in scientific research involve complex issues surrounding the conduct and impact of studies. Key concerns include **informed consent**, ensuring that participants fully understand the risks and benefits of their involvement. **Privacy** and **confidentiality** are crucial, particularly with sensitive data. **Scientific integrity** demands honesty in reporting results and avoiding falsification or manipulation of data. The potential **harm** to participants, animals, or the environment must be carefully considered. Additionally, **dual-use** research, where scientific advances could be used for harmful purposes, poses ethical risks. Balancing scientific progress with ethical considerations is essential for maintaining public trust and ensuring responsible research practices.