There is a guy in OH who teaches jeet kune do who was a bruce pupil. He has said that from his experience with bruce that he never mentioned steroid use but that he believed that he used something. The man was incredibly strong. Not as strong as the world strength championship guys but god damn incredibly strong and he was only 130-150 pounds.
I have a good friend who lives in china, the food is not loaded with sodium. Its not like everythings Chinese #8.
He was also a health nut, and by nut I mean he was obsessed with nutrition and training. All the guy did was train and train and train and train and if he wasnt training then he was teaching, if he wasntr teaching then he was reading, if he wasnt reading, he was sleeping. He wasnt much of a party animal

But then again he did more than just train and eat. He was private and he's dead, that makes him mysterious.
I have read lots of books and articles about bruce, some authorized others not and by no means am I an expert on this subject. I believe that he was too strong to be ALL natural. IMO
I didnt spell check, forgive me.