Gerontology & Geriatrics

How age affects male fertility

In 2012, proud dad Ramjit Raghav made global headlines when he became a father at the age of 96. He had beaten the record for the world's oldest dad—a record he'd set himself, two years earlier, at the age of 94.

Diseases, Conditions, Syndromes

COVID-19 infection may reduce fertility in men

COVID-19 may negatively affect sperm quality and reduce fertility in men, according to research published in Reproduction. The study indicates that COVID-19 infection can cause increased sperm cell death, inflammation, and ...

Health

High-fat diet in childhood may affect sperm later in life

New research in mice suggests that a high-fat diet early in life may impair male fertility in adulthood. The first-of-its-kind study is published ahead of print in the American Journal of Physiology-Endocrinology and Metabolism.

Health

Study reveals birth defects caused by flame retardant

A new study from the University of Georgia has shown that exposure to a now-banned flame retardant can alter the genetic code in sperm, leading to major health defects in children of exposed parents.

Diseases, Conditions, Syndromes

Evidence suggests COVID-19 isn't sexually transmitted

COVID-19 is unlikely to be spread through semen, according to University of Utah Health scientists who participated in an international study of Chinese men who recently had the disease. The researchers found no evidence ...

Genetics

Parental diet affects sperm and health of future offspring

When parents eat low-protein or high-fat diets, it can lead to metabolic disorders in their adult offspring. Now, an international team led by researchers at the RIKEN Cluster for Pioneering Research (CPR) has identified ...

page 1 from 11

Spermatozoon

A sperm, from the ancient Greek word σπέρμα (seed) and ζῷον (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. It joins an ovum to form a zygote. A zygote is a single cell, with a complete set of chromosomes, that normally develops into an embryo.

Sperm cells contribute half of the genetic information to the diploid offspring. In mammals, the sex of the offspring is determined by the sperm cell: a spermatozoon bearing a Y chromosome will lead to a male (XY) offspring, while one bearing an X chromosome will lead to a female (XX) offspring (the ovum always provides an X chromosome). Sperm cells were first observed by Anton van Leeuwenhoek in 1677.

This text uses material from Wikipedia, licensed under CC BY-SA