Health

Stress degrades sperm quality

Psychological stress is harmful to sperm and semen quality, affecting its concentration, appearance, and ability to fertilize an egg, according to a study led by researchers Columbia University's Mailman ...

May 29, 2014
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Why are girl babies winning in the battle for survival?

Sexual inequality between boys and girls starts as early as in the mother's womb – but how and why this occurs could be a key to preventing higher rates of preterm birth, stillbirth and neonatal death among ...

May 27, 2014
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