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 ...

(CNN) — People who have higher levels of strong, agile sperm may live nearly three years longer than those with poor swimmers incapable of making it to their destination, according to new research.