'For decades anti-marijuana and even pro-marijuana advocates have repeated a narrative about the potentially negative effects associated with smoking marijuana and the male sperm count. Smoking weed, we were told, decreases your ability to produce sperm. However, an extensive study published by none other than Harvard researchers this week, reveals quite the opposite may be happening.
The study, titled: “Marijuana smoking and markers of testicular function among men from a fertility centre,” was published on Wednesday in the journal Human Reproduction. The study posed the question of “Is marijuana smoking associated with semen quality, sperm DNA integrity or serum concentrations of reproductive hormones among subfertile men?”
The answer was surprising as it directly contradicted their expected result based on previously held beliefs and found that marijuana use did indeed appear to have a positive effect on sperm count.
“Our findings were contrary to what we initially hypothesized,” said Feiby Nassan, Ph.D., the study’s lead author and research fellow at Harvard T.H. Chan School of Public Health.
The study consisted of examining 662 subfertile men who were enrolled at the Massachusetts General Hospital Fertility Center between 2000 and 2017.
“The men provided a total of 1143 semen samples; 317 men also provided blood samples in which we measured reproductive hormones,” according to the study.
The men self-reported the use of marijuana. Interestingly, whether or not they had smoked it recently or a decade ago did not appear to affect the results. The study’s authors found that men who simply smoked weed at least once in their lives had a significantly higher sperm count than the men who never partook in the plant.
These findings, according to the team, “are not consistent with a deleterious effect of marijuana on testicular function.” The researchers noted that because they found the opposite of what they were looking for, further studies are recommended to confirm their findings.
The study also found that the amount of weed smoked by men is important and noted this as a possible explanation for why they discovered this increase in sperm count—because no one has ever examined the sperm count in men who’ve only smoked once or twice in their lives.
“However, they are consistent with two different interpretations,” said Nassan, “the first being that low levels of marijuana use could benefit sperm production because of its effect on the endocannabinoid system, which is known to play a role in fertility, but those benefits are lost with higher levels of marijuana consumption.”'
Read more: Massive Harvard Study Contradicts Anti-Pot Propaganda Told To Us For Decades
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14 March 2019
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