Effect of marijuana on sperm

For example, in , researchers from Denmark found that men who smoked marijuana more than once per week had sperm counts that were nearly 30 percent lower than those who didn't smoke marijuana, or those who used the drug less frequently. In the new study, Nassan and colleagues recruited about men from couples who came to the Massachusetts General Hospital Fertility Center between and to participate in the research. Marijuana is the most commonly used drug world wide with about million reported users. Choose your poison: tobacco, alcohol don't harm sperm; cannabis does. The EARTH Study is the largest of its kind, investigating the impact of more than 50 biomarkers on reproductive health through almost 20 years of continuous NIH funding. Men who had smoked marijuana had more concentrated sperm than men who had never smoked marijuana, the researchers found. Experiments in rats and a study with 24 men found that THC appears to target genes in two major cellular pathways and alters DNA methylation, a process essential to normal development.
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Cannabis and Male Fertility: A Systematic Review.

Marijuana smoking and markers of testicular function among men from a fertility centre. By contrast, this study included a broad range of people, including those who had only smoked a few times in the past. A new study from Harvard University researchers found men who smoke marijuana have significantly higher sperm counts than non-tokers. By posting a comment you agree to abide by the BioNews terms and conditions. Error: Please enter a valid email address.
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Studies: Weed Degrades Sperm, Spurs LUTS | Medpage Today

Cannabis use affects thesize and shape of sperm, according to a large study on lifestyle choices, environmental factors and semen quality The researchers note that these percentages closely match the frequency of marijuana smoking in the general U. The average age was 36 years. But cause and effect remain to be determined. The findings held even after the researchers took into account some factors that could have affected sperm concentration, such as age, cigarette smoking and alcohol use.
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These results are consistent with a direct prospermatogenic testicular effect of marijuana smoking and secondary compensation in FSH secretion, the researchers conclude. According to a new study, men who had smoked marijuana at some point in their lives had higher sperm counts than men who had never smoked weed. Choose your poison: tobacco, alcohol don't harm sperm; cannabis does. Animal models demonstrate a role for cannabis in testicular atrophy and reduced libido and sexual function, but these results have not yet been replicated in human studies. Sarah Vij, a urologist at the Cleveland Clinic who was not involved with the study. Overall, a little over half of the men 55 percent reported ever smoking marijuana in their lifetimes, and 11 percent said that they currently smoked marijuana.
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