because when your young eveything in your body is in perfect balance,
there is a strong Neurotransmittere center a long with perfectly balanced hormones, but certainly enough testosterone
to produce a strong erection
an erection requires a lot more than just testosterone it needs the powerful neurotransmiiters like serotonin, choline, dopamine, gaba..
as you age and abuse your body , drugs, poor diet, whatever the case may be, your
neurotransmitters // hormones become slowly out of balance overtime, eventually leaving most men with bad ED by the time there 50, but yet you should be able to maintain sexual vigor until your 100 years old.
, dhea, neurotranmitters must all be rebalanced if you want to get those solid erections back.
i believe once your balance like thyroid, TT, E2, the nuerotransmitters should naturally rebalance
thyroid is can create a major imbalance of each of these,