0 By Men's E-News Physical Health - HF Articles April 15, 2012 By io9 4/13/2012 “…A large study conducted by the Chinese government determined gossypol, a defensive chemical that’s found in cotton, to be an amazingly efficient male oral contraceptive. …” Read the entire article: http://io9.com/5901088/gossypol-the-chemical-commonly-found-in-cotton-that-is-also-a-male-contraceptive Men's E-News / About Author More posts by Men's E-News