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smoke marijuana more than once a week may lower men ’s spermatozoon counts by about a third , fit in to a newfangled report .
Researchers found that the Man in the bailiwick who smoked marijuana more than once a week had sperm count that were 29 per centum lower , on average , than those who did notsmoke marijuana , or used the drug less frequently .
The researchers thought that amount of simplification in sperm count " was quite a caboodle , " said study author Tina Kold Jensen , of the University of Copenhagen in Denmark .
They also found that the spermatozoan concentrations ( which is measured slimly differently than sperm cell count ) were 28 percent lower in the man who smoke marijuana more than once a calendar week .
It is not clear why marijuana use may decrease a military personnel ’s spermatozoon count and concentration , but it may have something to do with howTHC — marijuana ’s psychotropic constituent — interacts with sealed receptors in the testes , the researchers say .
In the study , the researchers asked 1,215 Danish men ages 18 to 28 whether they used marijuana and other drugs like speed , rapture and cocaine within the retiring three calendar month , and if so , how often . [ 11 Odd fact About Marijuana ]
The researchers also collect cum sample , to measure the men ’s sperm counts and concentrations .
About 45 percentage of the men in the study said they had smoked marijuana in the retiring three months . About 10 pct of the study participants had used marijuana as well as amateur drugs during this time .
Moreover , in the men in the study who smoke marijuana and used other recreational drugs , the sperm count were cut by 55 percent , and the sperm concentration were repress by 52 pct , compared with men who had n’t used the drugs .
The researchers institute that the homo who had smoked marijuana in the retiring three month were also more likely to smoke cigarettes , and consumed more alcohol and caffeine than those who had not .
These modus vivendi component also could have involve themen ’s sperm level , so the researchers take them into account , and the link between marijuana and lower sperm levels held . However , the discipline still does not examine that the drug caused the lower spermatozoon reckoning , Jensen say .
" We can not shut out the possibility that the men who used marijuana generally have an unhealthful life-style and health behavior , which may also affect their cum quality and hormone degree , " the researchers said in the study .
" It is … crucial to note that marijuana exploiter were distinct in several ways from nonusers , " Dr. Michael L. Eisenberg of Stanford University School of Medicine , who was not involved in the fresh study , compose in an column accompanying the study in the diary . And although the researchers align for these differences , such as high rates of cigarette smoke and alcohol consumption , they could have still confuse the potentialeffects of marijuana on spermatozoan , he wrote .
Still , the new study " leave authoritative selective information for patients and providers regarding the damaging association between marijuana use and ejaculate quality , " Eisenberg pen .
The sketch was published Aug. 16 in the American Journal of Epidemiology .
