This would be true providing that all of the fighters using TRT have juiced. However, let's not act like test levels don't drop in your 30's whether you juiced or not.
Stephie Daniels: Guys that are older, that take TRT to compete on a younger level, Frank Mir is only 33. Is he really old enough to require TRT naturally?
Dr. Benjamin: Let's be honest here. How many people who never wrecked their bodies with past steroid use, naturally need TRT at 33? Less than one or two percent.
full interview on page 20.