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."
The most common type is skin gel, which is used by about 70 out of 100 patients. The gel is rubbed onto your shoulders or upper arms after a shower. About 17 out of 100 patients use shots and 10 out of 100 use patches. About 3 out 100 patients use testosterone in other forms, such as patches or pellets placed in the body. At this time, pills are not approved for use in the .
You should not take testosterone for non-medical reasons, such as body building, preventing aging changes or performance enhancement. Men should not take TRT if they have normal testosterone levels or if their testosterone levels have not been tested. If you have normal testosterone levels, using TRT will not help your health problems. Also, if you are trying to father a child, you should not be on TRT. TRT can decrease your sperm count and fertility.
Before you take TRT, a doctor who is skilled in diagnosing low-T should examine you carefully. Your doctor should not prescribe TRT without taking an in-depth health history and giving you a physical exam and blood tests. Many of the symptoms for low-T can be the result of other health problems. Other causes of symptoms need to be ruled out before testosterone is prescribed.
Before you start TRT, your doctor should talk to you about possible side effects. Side effects can include:
In men, low testosterone levels in the body can be supplemented by hormone replacement with testosterone. Testosterone replacement therapy can be prescribed as an intramuscular injection usually given on a biweekly basis; as a patch or gel placed on the skin, or as putty that is applied to the gums of the mouth. Each of the treatments has its risks and benefits. The decision as to which form of testosterone to use depends upon the clinical situation. Discussions between the patient and health care professional often helps decide which medication to use.
In the United States there are currently no preparations that are FDA approved for testosterone replacement for women.