Interestingly, in the past there was a lot more self-experimentation done by researchers. The history of such self-experimentation is chronicled in a book call

Interestingly, in the past there was a lot more self-experimentation done by researchers. The history of such self-experimentation is chronicled in a book called "Who Goes First?": https://www.amazon.com/Who-Goes-First-Lawrence-Altman/dp/0520212819 https://www.amazon.com/Who-Goes-First-Lawrence-Altman/dp/052...