Decline in T causes you to become more sensitive to stress with respect to erectile function. It’s entirely possible that both are correct. A sixteen year old

Decline in T causes you to become more sensitive to stress with respect to erectile function. It’s entirely possible that both are correct. A sixteen year old going through puberty with hormones through the roof has no problem getting it up, stress or not (even when they don't want it, as every teenage boy knows). A 30 or 40 year old will have lower T levels, enough so that psychological issues can take the forefront and cause ED. It is still fair to ask if raising T levels can cause them to still perform while working stressful jobs, as we all have to do.