Reports of falling sperm counts and testosterone levels have fuelled fears over chemicals, pollution and modern lifestyles. But how much do scientists agree on what is affecting male fertility?

Genes associated with male reproductive biology appear to be under relaxed selective constraint in a primate species with low sperm competition.

This is read by an automated voice. Please report any issues or inconsistencies here. Male factors contribute to 50 percent of all conception difficulties. A varicocele affects 20 percent of all men ...

Reproductive system disorders encompass a wide range of conditions affecting the organs and processes involved in human reproduction that can make it difficult to conceive. Treatments vary depending ...

The Cystic Fibrosis Foundation organised a multidisciplinary committee to develop this Position Paper to outline current ...

Reproductive biology, human behavior, and economic incentives explain many of the disparities attributed to systemic ...

Testosterone deficiency screening and replacement therapy will soon be on offer for active-duty service members as a military readiness initiative as part of a new military readiness program announced ...

About 9% of men of reproductive age in the United States experience fertility problems. One of the many causes of male ...

WOMEN with polyendocrine metabolic ovarian syndrome (PMOS) face a four times higher risk of heart disease than those without ...

New research suggests that heat stress increases the occurrence of same-sex sexual interactions between male burying ...

Testicular cancer is a rare form of cancer that most commonly affects young men between the ages of 15 and 35.