Testosterone is a hormone produced in the male testes. During a boy's pubescent years (ages 9 to 14), there is an increase in production that leads to male secondary sexual characteristics such as a deeper voice, more muscle mass, facial hair growth and enlargement of the Adam's apple (among others). Some teenage boys experience these puberty changes at later ages than others. The timing of puberty is often genetically determined (through heredity), but other factors can play a role in delaying it, such as poor nutrition, physical trauma and certain diseases. Stimulating testosterone production naturally is possible in teen boys, although in rare cases hormone therapy may be needed to trigger and complete puberty.
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.
AndroGel (testosterone) for Hypogonadism, Male: "I am 33 was tested and had low t my results were 39 which is extremely low. I started on androgel two pumps made me very aggressive and I would snap and get angry so I went to 1 pump in the morning my sex drive went through the roof :) . After 6 wks I was tested the results were 432 that was exciting I also gained 15pounds I use to weigh 140 now I'm staying between 150-156 I am stronger more energy can think better but I do have my days that suck it's all part of the test now not everyone is going to have results like mine so keep trying to find what it is that works also if your eating poorly that maybe the reason also try to eat healthy and workout"