A new study describes the first oral male contraceptive to prevent fertilization in mice by causing sperm abnormalities. (sciencemag.org)
In addition, check for STD's, as infections such as Chlamydia can result in sperm abnormalities and blocked tubes in women. (salernocenter.com)
Washington State University molecular biologist Michael Skinner had previously shown that sperm abnormalities induced by vinclozolin, a toxic fungicide used on wine grapes, strawberries, and other fruits, can pass from father to son for four generations in rats. (discovermagazine.com)