Seminal fluid can appear pink, green or even black.

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 ...

Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Medically reviewed by Matthew Wosnitzer, MD Key Takeaways A seminal vesicle is a small gland above the prostate that helps ...

This article was reviewed by Darragh O’Carroll, MD. Key Takeaways: After a vasectomy, sperm production doesn’t stop — but ...

As males age their reproductive success typically declines. A study in fruit flies, led by University of Oxford researchers has found that while old males do produce fewer offspring than young males, ...

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 ...

For male fruit flies, sperm is not enough in the battle to reproduce – at each mating a cocktail of proteins is transferred to the female, many of which directly influence female behaviours in ways ...