Marijuana and sperm
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. Your message to the editors. This, combined with the demand and wide availability of marijuana bred specifically to yield higher THC content, make this research especially timely, Kollins said. Overall, the men provided a total of 1, semen samples. Sperm motility decreased, acrosome reactions failed to occur and worst of all, sperm counts dropped and the nurse Sertoli cells that help to make sperm disappeared irreversibly.
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Studies: Weed Degrades Sperm, Spurs LUTS
Feiby Nassan, one of the authors of the study, said the reason could be men with higher testosterone levels are more likely to engage in behavior such as drug use. Much like previous research that has shown tobacco smoke , pesticides, flame retardants and even obesity can alter sperm, the Duke research shows THC also affects epigenetics, triggering structural and regulatory changes in the DNA of users' sperm. It's also possible that some previous studies finding harm to men's fertility were confounded by subjects who used multiple drugs as well as marijuana, the study notes. And as a study published September 19 in Scientific Reports revealed, human males have a lot of endocannabinoid receptors in their testicles. Post was not sent - check your email addresses! Total sperm counts followed a similar trend. How Do I Whitelist Observer?
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Exposure to cannabis alters the genetic profile of sperm
Sperm concentration was nearly 63 million per milliliter for men who had smoked versus only about 45 million per milliliter for those had never smoked, the team reports today in the journal Human Reproduction. Chan School of Public Health in Boston, said in a statement. And yet, the study still found that men who said they used marijuana at least a year ago had higher sperm counts than men who used it more recently. They had believed that cannabis might trigger or inhibit releases of hormones—not that cannabis itself had such a direct link to sperm production. 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. 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. National research has shown a steady decline in the perceived risk of regular marijuana use.
The researchers took samples of testicular tissue from 15 men, all of whom had testicular germ cell cancer. Even though we know a lot. Wannabe dads now have high hopes. To read our full stories, please turn off your ad blocker. The higher the concentration of THC in the men's urine, the more pronounced the genetic changes to their sperm were, the authors found.