Testosterone is a male hormone that, although found in women as well, exists in much higher concentrations in males. In fact, men on average feature several characteristics that are attributed to testosterone, including heightened aggression and increased sexual drive. Unfortunately, testosterone decline is a natural part of growing old, and by the time a man reaches middle age, his levels of the hormone are dropping every year. But there are some ways to supplement the body and encourage the production of new testosterone.
DHEA
DHEA is a type of hormone produced naturally in the body. It helps the body generate testosterone and was used in the 1990s by a number of professional baseball players as a performance-enhancing drug. Mark McGuire, who set the single-season home run record in 1998, was one of its users, according to ABC News. DHEA can still be taken today, although some sports leagues have banned its use. However, it is only safe when administered by a doctor. as with most medications.
ZMA
ZMA is a mineral formula whose main ingredient is zinc -- an important nutrient in your body's synthesis of testosterone. The product is all-natural and has been shown in clinical studies to significantly increase hormone levels in athletes who deplete their hormones through intense exercise. ZMA is entirely comprised of minerals and vitamin B, making it safe for even teenagers to use, although you should still consult a doctor before taking the supplement to make sure you are well-informed of its interactions in the body.
Eurycoma Longfolia
Eurycoma Longfolia is a supplement that frees testosterone from binding to a hormone called SHBG, which prevents the testosterone from being absorbed through hormone receptors and used by the body. This increases the amount of usable testosterone in the body by about 30 percent. However, because it is a synthetic supplement it is not safe for use by teenagers, and adults should still visit with a doctor prior to using it.
Food Supplements
Several foods are known to increase the body's ability to produce testosterone. Several of these do so with their high content of zinc -- this is true for raw oysters, which have one of the highest zinc concentrations of any food, as well as pumpkin seeds. Avocados boost libido through their content of vitamin B6, and bananas are effective because they feature a high amount of the enzyme Bromelain.


