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Smoking and sperm count

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Now a research team has discovered that, independently of nicotine exposure from the mother, men whose fathers smoked at the time of pregnancy had half as many sperm as those with non-smoking fathers.

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Children of fathers who smoke have been reported to have up to four times as many mutations in a certain repetitive part of the DNA as children of non-smoking fathers.

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Chan School of Public Health in Boston, said in a statement.

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For example, inresearchers 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 Smoking and sperm count who used the drug less frequently.

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Among men who never smoked marijuana, 12 percent had lower-than-normal sperm concentrations.

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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.

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Vij said she wondered if "there's something that goes along with marijuana use" that's tied to better sperm production.

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In addition, men in the study self-reported their marijuana use, and it's possible that some participants were not truthful about their marijuana use, due to the social stigma or illegal status of the drug in Massachusetts at Smoking and sperm count time the data was collected.

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Now a research team at Lund University in Sweden has discovered that, independently of nicotine exposure from the mother, men whose fathers smoked at the time of pregnancy had half as many sperm as those with non-smoking fathers.

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In addition, men in the study self-reported their marijuana use, and it's possible that some participants were not truthful about their marijuana use, due to the social stigma or illegal status of the drug in Massachusetts at the time the data was collected.

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