What key principle was added to the Declaration of Helsinki compared to the Nuremberg Code?

The key principle added to the Declaration of Helsinki compared to the Nuremberg Code is the emphasis on the right to privacy of personal information. The Declaration outlines the necessity to protect the privacy of individuals and the confidentiality of personal data collected during medical research. This heightened focus on privacy addresses ethical concerns beyond what was found in the Nuremberg Code, which primarily emphasizes informed consent and the rights of subjects to voluntarily participate in research. Moreover, the Declaration of Helsinki also includes recommendations on how to handle data in a way that ensures confidentiality, thus reinforcing the need for safeguarding personal information in research contexts. This reflects an evolution in ethical considerations relevant to modern medical and clinical research practices, where data security has become increasingly significant in light of technological advancements and data sharing practices.