Testosterone is a sex hormone; It is naturally produced in both men and women but is made at a much higher level in men. Low testosterone is not just about libido or becoming stronger and bigger in the gym. While this can be an effect of treatment, the condition known as Low T is much more in-depth. It is what gives a male the secondary sex characteristics of a man. Testosterone – which can profoundly reduce energy levels – is responsible for stimulating muscle growth, achieving normal erectile and cognitive functions, restore energy levels and maintaining normal bone density.
But I'm not more aggressive—a behavior change often tied to testosterone. That's not surprising to Robert Sapolsky, ., a neuroendocrinologist at Stanford University and a leading researcher on stress and behavior. "It's really not the case that testosterone 'causes' aggressive behavior," he says. "Instead, it makes the brain more sensitive to social cues that trigger aggression. And in support of that, a guy's testosterone level isn't a very good predictor of how likely he is to be aggressive."
If a young man's low testosterone is a problem for a couple trying to get pregnant , gonadotropin injections may be an option in some cases. These are hormones that signal the body to produce more testosterone. This may increase the sperm count. Hedges also describes implantable testosterone pellets, a relatively new form of treatment in which several pellets are placed under the skin of the buttocks, where they release testosterone over the course of about three to four months. Injections and nasal gels may be other options for some men.