Can an 18 year-old mess up his endocrine system if he takes a testosterone booster?

Who knows?: There are no testosterone boosters, no matter what the internet and tv and your friends may tell you. The only way to boost your testosterone is through a healthy lieve style, proper nutrition, exercise, and avoidance of toxins like alcohol and tobacco. Save your money, and your health. Anabolic steroids on the other hand are illegal, dangerous, and can kill you.

Yes: Testosterone boost, as in steroid shot or cream: at least, the body may recognize the testosterone boost as being an elevation in testosterone and shut down production of the body's own testosterone. It may cause irreversible damage to the testicles. Testosterone boost, as in vit./herbal supplement: most of the damage will be done to the wallet. See excess vit. Issues and supplement dangers.