When Setchell reviewed sperm counts over a 60-year period starting in the early 1930s, he found no change for either cattle or pigs and a slight, but significant, increase in sheep. Crucially, ...
Men with strong, fast-swimming sperm may not only have better fertility, but also longer lives, a new study suggests. Researchers tracked more than 78,000 men over 50 years and found that those with ...
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