Sperm are male reproductive (sex) cells. The word "sperm" can refer to spermatozoon (singular) or spermatozoa (plural). Sperm are tiny cells with an oval-shaped body and a long tail. They measure just ...

Just like urine and stool, semen can provide important clues about a man’s health. Variations in its color, texture, smell and volume can signal underlying health conditions. Understanding these signs ...

Recent research shows that a father’s health, lifestyle, and environment can influence his children’s development, even ...

Low sperm count has become an increasingly common concern among men, and it can make it difficult for couples to conceive ...

Add Yahoo as a preferred source to see more of our stories on Google. After struggling with infertility, these men sought out sperm donors to help them become dads. (Photo illustration: Yahoo News; ...