There are a number of supplements which are believed to increase testosterone levels naturally. One of the most popular is Tribulus Terrestris. This is available at most vitamin and health stores. It...
Saw Palmetto has been shown to reduce testosterone levels in women. Available at any heath store, take two tables morning and night on an empty stomach.
Fruits, vegetables, oysters, meat to name a few.
cow's brainA supplement called DHEA is supposed to do it.
Read up on it first and check with a doctor before taking any supplement