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?

Microplastics have been found in human semen and testes, but do they cause infertility? Explore the latest evidence on sperm ...

Menopause not only affects the reproductive system, but also gut health. Dr Sethi explains how the link works and how one can ...

A Cornell-led study is challenging a decades-old explanation for how chromosomes exchange genetic material within the ...

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

How could the system better support men who have been told they might have a fertility issue?

New research challenges the idea that self-fertilization is an evolutionary dead end and points to a more complex story.

After President Donald Trump gained ground with young men and rode his ascendant, aggressive brand of masculinity into a ...

In mid-2020, while Covid lockdowns gripped the country, Luke and his wife decided to start a family. "All through my teens the message was clear: don't have sex without a condom or you might get ...

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

A large meta-analysis, studying five decades, has found a dramatic and sustained decline in testosterone levels among men, raising concerns that the male fertility crisis is deeply misunderstood.

A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...