Does soy affect testosterone?

No, especially if you only consume normal amounts of soy once or twice a day. Earlier animal studies and poorly controlled human trials suggested that the phtyoestrogens contained in soy protein or supplements can lead to unwanted decreases in testosterone and increases in the more feminine hormone, estrogen. Both of these assumptions have recently been successfully countered by many better controlled human studies. Two meta-analyses (groups of related studies) published in 2010 clearly demonstrate that even very high daily consumption of soy proteins (higher than generally consumed by Asian men) show no significant effects on male hormones. If you enjoy soy-type foods or drinks, do not let this myth stop you. On the other hand, although soy containing foods are generally healthy, the claims made by manufacturers about the extra benefits of soy may not be entirely true.

Continue Learning about Endocrine System

Endocrine System

Your endocrine system works with your nervous system to control important bodily functions. The endocrine systems responsibilities include regulating growth, sexual development and function, metabolism and mood. The endocrine syst...

em also helps give your body the energy it needs to function properly. Endocrine glands secrete hormones into the bloodstream. Hormones are considered chemical messengers, coordinating your body by transferring information from one set of cells to another. Your endocrine system health can be affected by hormone imbalances resulting from impaired glands. A hormone imbalance can cause problems with bodily growth, sexual development, metabolism and other bodily functions. Endocrine system diseases or conditions include diabetes, growth disorders and osteoporosis.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.