I don't like statements like "you are already up to your ears in testosterone." How can an author like you dare to speak in absolutes?
It's that kind of talk that was infuriating to hear when I discovered that at around age 18, I had LESS testosterone than you, yap1993, have at age 58.
People like my father were like you, explaining that my hormonones were "raging." Bullshit.
If this guy doesn't feel right, he probably does have a testosterone deficiency. Yes, even at age 18. If he's just looking for a testsosteone boost from nutritional supplements -- no problem there. Zinc, caclium, and the right amount of healthy fats should keep production at your body's maximum. If you want a pro-horomone, I reccomend 4-AD. It seems to have gotten the best subjective response from the people I know.