Bryan Johnson took synthetic peptides, which triggered an autoimmune disease that will kill him. Now he's claiming to be a random victim of a "rare disease".

https://www.news18.com/lifestyle/health-and-fitness/bryan-johnsons-autoimmune-gastritis-diagnosis-is-raising-awareness-about-a-rare-digestive-disease-10207459.html

Lance Armstrong inspired the world fighting cancer...which he caused to himself with a massive cocktail of hormones. US Postal hid the fact that he wasn't the only rider on the team to get testicular cancer.