Marijuana use might affect the size and shape of a young man’s spe_rm, possibly impairing his fertility, a new study claims.
“Our data suggests that cannabis users might be advised to stop using the drug if they are planning to try and start a family,” study author Dr Allan Pacey, a senior lecturer at the University of Sheffield in England, said in a university news release.
“Our knowledge of factors that influence spe_rm size and shape is very limited, yet faced with a diagnosis of poor spe_rm [size and shape], many men are concerned to try and identify any factors in their lifestyle that could be causing this,” said Pacey.
The research included nearly 2 000 men who visited one of 14 fertility clinics and answered questions about their medical history and their lifestyle.
Of that group of men, 318 had spe_rm that was considered “abnormal”. Less than 4% of their spe_rm was the correct size and shape, the researchers said. The information collected on these men was compared to data from the remaining 1 652 men who had sperm that was considered “normal”.
Abnormal sperm samples
The researchers examined how certain lifestyle choices affected the size and shape of the men’s spe_rm and found “very few identifiable risks”, Pacey said.
Although cigarettes and alcohol had little effect, the study revealed that spe_rm size and shape was negatively affected if the men were younger than age 30 and had smoked marijuana within three months.
Spe_rm samples produced during the summer were also nearly twice as likely to be considered “abnormal”, the study showed.
The study authors noted that spe_rm size and shape may be linked to other factors that were not measured, such as the quality of a man’s DNA.
Previous research has suggested spe_rm need to be of good size and shape to work their way through a woman’s body after s.e.x and fertilise an egg.
Men exposed to paint str1ppers and lead are also at risk of having spe_rm with poor shape and size, Nicola Cherry, an epidemiologist and professor formerly of the University of Manchester in England, said in the news release.
-daily sun
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