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A study at the University of Jerusalem showed that global sperm count and sperm concentration had declined by more than 50% in the last 46 years. 53 countries were checked in the study from all continents. The decline is not only bad for men’s fertility but also for men’s general health.

 

Photo by: https://www.pexels.com/photo/an-illustration-of-fertilization-8680388/

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Eggs made from male mice

A breakthrough at Osaka university of Japan; eggs were created from male mice cells. It is done by separating the XY chromosomes, then adding another

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