Smoking history The history of drugs is unexpectedly related to the fertility of men. Even if you do not use drugs.
The results were astonishing for Harvard scientists who measured the number of spermatozoans in more than 600 males from couples attending infertility clinics.
They predicted that cannabis will have a detrimental effect on sperm count and fertility. Instead, participants who admitted to taking drugs showed higher sperm counts than non-users.
This finding does not necessarily mean that smoking cigarette increases father's chances, and research authors and other experts point out that it is fast.
They suggested that the association does not show a causal relationship but rather reflects the effect of the male hormone testosterone on risk behaviors such as sperm count and smoking cannabis.
According to the new Harvard study, frequent marijuana smokers, such as the unfortunate nature of Seth Roggen, who conceived Katherine Hagel's character overnight, could be more fertile than those who have never used cannabis
Jorge Chavarro, a senior researcher at Harvard University 's Boston Health Institute, said: "This unexpected finding has little to do with the effects of marijuana' s reproductive health and health on marijuana health.
Our results should be interpreted with caution and emphasize the need to study more about the health effects of using marijuana.
Previous studies of men with a history of animal experiments or substance abuse have shown that cannabis destroys male reproductive health.
In this study, from 2000 to 2017, 1,143 semen samples were collected from 662 males.
On average, a man was 36 years old, mostly white, and received university education. They all belong to couples seeking help in the fertility clinic's pregnancy. Participants were asked to complete a detailed questionnaire on the use of cannabis.
More than half (55%) of the men reported that they had weed at some point.
44% of them said they used drugs in the past, and 11% categorized them as current users.
Analysis of sperm samples showed that the average sperm concentration in men who smoked marijuana was 62.7 million sperm per milliliter (millions / mL).
Those who never smoked joints averaged 45.4 million / mL. Only 5% of cannabis users showed sperm counts of less than 15 million / mL compared to 12% of men who never smoked marijuana, and the level of the World Health Organization (WHO) & # 39; .
Also, the increase in cannabis use is associated with high levels of male hormone testosterone among smokers.
In the Journal of Human Reproduction, scientists said low exposure to cannabis could help sperm production.
The endocannabinoid chemical messenger system of the brain, which is targeted by the drug, is known to play a role in controlling fertility.
On the other hand, the association has nothing to do with the efficacy of cannabis.
"It is equally plausible that our findings may reflect the fact that men with high testosterone levels are more likely to engage in risk-taking behavior, including smoking marijuana," said Dr. Feiby Nassan, a Harvard member.
This view was led by Allan Pacey, a British expert who was a Professor of Andrology at the University of Sheffield. "As the authors point out, men with high sperm concentrations are more likely to smoke marijuana because they contain more testosterone in the body and simply take risks.
In conclusion, this paper is not convinced that we will move forward in this debate.
& # 39; nor does it provide support for the obvious fertility benefits of marijuana smoking.
& # 39; In my opinion, you should avoid all costs of a couple trying to start a family. & # 39;
Sheena Lewis, a professor at Queen's University in Queens, said, "We found exactly the opposite effect in the laboratory of Queens University in Belfast.
Sperm quality has fallen sharply in subjects taking marijuana at similar doses for several weeks each day. The sperm motility decreased, the ancestral response did not occur, and at worst the number of sperm was reduced and the function of Sertoli or & quot; supporting cell & quot; Explained.
& # 39; I have to be careful to accept the results of this study without further information. & # 39;