The cause is well known. Gynecomastia results from an imbalance between testosterone and estrogen in males. You see, women and men produce both hormones.
When woman make too much testosterone (something that happens during menopause) they make stubble and start balding. Men saggingly sport hairy honkers when estrogen out-flows testosterone.
New research in animal studies show exposure to copious amounts of marijuana's THC decreases testosterone levels, shrinks the testicles, and mangles the sperm.
The number of men undergoing surgery for man boobs rose 30% from 2011 to 2012. In the same time period pot smoking rose by 30% thanks to legalization efforts, and the growth of the medical marijuana industry.
Will this new threat cause dope-heads to desist? Nah. These guys would probably be okay with basketball sized goiters on their necks and still suck down the stuff readily. Dopers are dildos.
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