Blue Collar Workers More Fertile, Study Shows
The trend of fewer men getting university degrees—often leading to 9-to-5 desk jobs—may have a positive aspect.
The trend of fewer men getting university degrees—often leading to 9-to-5 desk jobs—may have a positive aspect.
The meta-analysis extracted data from 10,000 scientific journals and focused on 223 peer-reviewed studies based on sperm samples from more than 57,000 men across 53 countries.
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