WebMD says
"Treating normal aging with testosterone therapy is not advisable. If you don't have a medical condition that's contributing to your decline in testosterone levels, your doctor might suggest natural ways to boost testosterone, such as losing weight and increasing muscle mass through resistance exercise."
I feel good 50 my dad is still a stud at 75 and still runs and takes nothing not even an asprin. I'ma ask my doctor next time I see him but I doubt it since i do what that blurb says. I run 4-6x a week to keep weight down. Lift.. not heavy... im naturally thick mesomorph type, so I do 3 sets of 15 to lean out and keep tendons/ligaments strong.