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Scientists say male sperm counts have plummeted by almost a third since 1989, suggesting boozing and obesity may be the culprits.
The finding was based on a survey of 7,500 men who attended the Aberdeen Fertility Center in Scotland.
"This must cause some concern and needs to be explained," said Dr. Siladitya Bhattacharya, who led the research. "It just highlights the need for research."
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