I hadn't heard that, but it wouldn't surprise me.It is known to increase the likely of impotence,and decrease sexual performance.It is also known to lower apparent I.Q.All around, it sucks as preparation for sex unlessboth parties partake.

no it cant lower the count.a young man sperm count is roughly 20 million so your friend better be prepared to become a father.

I think so but that doesn't make it impossible to have kids.

No. It gets in his DNA and he should not have smoked it at all. It does affect the child through previous exposure of the parents. But NO, he is just a creep.

That's an old urban legend. Millions of people smoke pot and are able to procreate. I would tell her to get the 'ole Maury Povich' baby test.Mr Soandso....you ARE the father.

well it is true becuase of the drug ubuses and all alchohol and stuff like that have been a complete harm to most mens testacles because of the untural nature to wat they are used to. as u may have noticed by ur friend or wat ever, he lost most of his sperm ecause some of it have burned away or had just dried up.

Yes Pot Smokers Have Lower Total Sperm Count, BUT that dopesnt mean he doesnt have sperm or that it's not his kid!!!Men who smoke marijuana frequently have significantly less seminal fluid, a lower total sperm count and their sperm behave abnormally, all of which may affect fertility adversely, a new study in reproductive physiology at the University at Buffalo has shown.This study is the first to assess marijuana's effects on specific swimming behavior of sperm from marijuana smokers and to compare the results with sperm from men with confirmed fertility. Marijuana contains the cannabinoid drug THC (tetrahydrocannabinol), which is its primary psychoactive chemical, as well as other cannabinoids.Results of the study were presented at the annual meeting of the American Society of Reproductive Medicine in San Antonio."The bottom line is, the active ingredients in marijuana are doing something to sperm, and the numbers are in the direction toward infertility," said Lani J. Burkman, Ph.D., lead author on the study. Burkman is assistant professor of gynecology/obstetrics and urology and head of the Section on Andrology in the UB School of Medicine and Biomedical Sciences. UB's andrology laboratory also carries out sophisticated diagnosis for infertile couples."We don't know exactly what is happening to change sperm functioning," said Burkman, "but we think it is one of two things: THC may be causing improper timing of sperm function by direct stimulation, or it may be bypassing natural inhibition mechanisms. Whatever the cause, the sperm are swimming too fast too early." This aberrant pattern has been connected to infertility in other studies, she noted.Further research in the andrology laboratory showed that human sperm exposed to high levels of THC displayed abnormal changes in the sperm enzyme cap, called the acrosome. When researchers tested synthetic anandamide equivalents on human sperm, the normal vigorous swimming patterns were changed and the sperm showed reduced ability to attach to the egg before fertilization. Only about 10 laboratories in the U.S. perform this array of sperm function tests.In the current study, Burkman received seminal fluid from 22 confirmed marijuana smokers and subjected the samples to a variety of tests. The volunteers reported smoking marijuana approximately 14 times a week, and for an average of 5.1 years.Control numbers were obtained from 59 fertile men who had produced a pregnancy. All men abstained from sexual activity for two days before the lab analysis.The samples from both groups were tested for volume, sperm-count-per-unit of seminal fluid, total sperm count, percent of sperm that was moving, velocity and sperm shape.Results showed that both the volume of seminal fluid and the total number of sperm from marijuana smokers were significantly less than for fertile control men. Significant differences also appeared when HA and velocity, both before and after washing, were assessed, the study found."The sperm from marijuana smokers were moving too fast too early," said Burkman. "The timing was all wrong. These sperm will experience burnout before they reach the egg and would not be capable of fertilization."Burkman noted that many men who smoke marijuana have fathered children. "The men who are most affected likely have naturally occurring borderline fertility potential, and THC from marijuana may push them over the edge into infertility," she said.As to the question of whether fertility potential returns when smokers stop using marijuana: Burkman said the issue hasn't been studied well enough to provide a definitive answer."THC remains stored in fat for a long period, so the process may be quite slow. We can't say that everything will go back to normal. Most men who have borderline fertility are unaware of that fact. It's difficult to know who is at risk. I definitely would advise anyone trying to conceive not to smoke marijuana, and that would include women as well as men."































alcoholism.about.com

yep its true.. ma homie cant have babys cause he did toomuch weed and he's girl left him

He is full of crap and doesn't want to acknowledge his child, that's sad. It probably does plus makes you STUPID but that doesn't mean that he couldn't have fathered the child. If it's true, then it LOWERS the count it doesn't eliminate them. That is cruel thing to do to your wife and child, I have heard that a man did that to his children who were old enough to understand what he was saying as he constantly told them I ain't your dad, and constantly told his wife that she had cheated on him. They had like seven kids. It was the same story because I took drugs, my sperm count is too low to produce kids, they tested the kids and they were all his.

Long term use of marijuana does have some effects on reproductive organs..Go to: www.askpat.colo state.edu/archive