Published in Nutrition. 2011 Feb 23.
Hypogonadism and erectile dysfunction associated with soy product consumption.
Siepmann T, Roofeh J, Kiefer FW, Edelson DG.
Center for Autonomic and Peripheral Nerve Disorders, Beth Israel Medical Deaconess Center, Harvard Medical School, Boston, Massachusetts, USA.
This paper can be accessed at: http://www.ncbi.nlm.nih.gov/pubmed/21353476
Siepmann presents the case of a 19-y-old type 1 diabetic but otherwise healthy man with sudden onset of loss of libido and erectile dysfunction after the ingestion of large quantities of soy-based products in a vegan-style diet. Blood levels of free and total testosterone and dehydroepiandrosterone (DHEA) were taken at the initial presentation for examination and continuously monitored up to 2 y after discontinuation of the vegan diet. Blood concentrations of free and total testosterone were initially decreased, whereas DHEA was increased. These parameters normalized within 1 y after cessation of the vegan diet. Normalization of testosterone and DHEA levels was paralleled by a constant improvement of symptoms; full sexual function was regained 1 y after cessation of the vegan diet. This case indicates that soy product consumption is related to hypogonadism and erectile dysfunction
Full article here: http://healthydietsandscience.blogspot.com/2011/03/soy-consumption-is-related-to.html