With medical marijuana becoming legal in states across the U.S. there has been recent media coverage of the claim that there is a definitive link between marijuana usage and male breast development.
Studies on the issue are few and far between since marijuana is still illegal in most states, but many plastic surgeons believe there is a link. One study found that marijuana has “widespread effects on multiple hormonal systems, including gonadal, adrenal, prolactin, growth hormone, and thyroid hormone regulation. When the drug throws off the normal balance of hormones, estrogen levels rise and stimulate breast tissue growth.”
If you’re a guy and you’re worried about gynecomastia, you shouldn’t smoke pot because there’s a link.” Robert X. Murphy Jr., president of the American Society of Plastic Surgeons, agreed that this was the prevailing opinion among plastic surgeons.