Poor quality Western diet kills sperm count and lowers male testosterone, study says

(CNN)If sperm was an animal, science might worry that it's heading toward extinction in Western nations.

Total sperm count in North America, Europe, Australia and New Zealand dropped by up to 60% in the 38 years between 1973 and 2011, research found -- an acceleration of a trend that began in the 1940s. More recent studies show the trend is continuing.
Sperm counts of Western men plummeting, analysis finds