* [[Chrysin]], a flavonoid extracted from passion flower, is thought to prevent the conversion of testosterone to estrogen. As a result of this blocking action, it helps to raise free testosterone levels naturally.
* Raw [[Pine Pollen]] is the richest seedbed of testosterone derived from plants; since it is the male sperm of pine trees.
* [[Fenugreek]] has a reputation for boosting testosterone. It is now being included as the primary ingredient in many testosterone boosting supplements.
* Oysters: Not only do oysters make an excellent appetizer they are also a good source of minerals like selenium and zinc, and are also high in protein. Zinc helps to raise sperm and testosterone production.
* [[Tribulus Terrestris]] is most often used for infertility, erectile dysfunction, and low libido. In the last decade, it has become popular to improve sports performance.