It's odd that "low Testosterone levels" (as in "lower T levels compared to ...") is automatically considered to be something bad (by male readers). High T-levels are connected with higher susceptibility to inflammation f.x.
Low testosterone is pretty bad... fatigue, mental fog, low sex drive, weak muscles, ED, etc. I have low test and it's not something that I consider normal. The difference between low and high T is night and day. It greatly affects the well being.
that's because it is bad. men need normal levels of testosterone. anyone who tells you otherwise has another agenda they're pushing (take a wild guess).