Male fertility may be declining worldwide, according to a growing body of research that has raised concerns among scientists and physicians. Some studies suggest sperm counts in Western countries have dropped significantly over the past several decades, with a 2017 meta-analysis reporting nearly a 60% decline since the early 1970s. While experts disagree on how severe the trend may be, many clinicians say they are seeing more couples where male factors contribute to infertility.
Doctors say multiple lifestyle and environmental factors may play a role. Obesity, smoking, heavy alcohol use and poor diet have all been linked to reduced sperm quality, while illnesses that cause fever — including infections like flu or COVID-19 — can temporarily lower sperm counts for several months. Researchers are also examining whether environmental exposures, such as endocrine-disrupting chemicals found in plastics and other consumer products, could influence reproductive health.
Experts note that male infertility can also reflect broader health issues. Poor semen quality has been associated with metabolic, hormonal and environmental problems, suggesting fertility may serve as an early indicator of overall health. Physicians advise men concerned about fertility to seek medical evaluation and focus on known protective steps such as maintaining a healthy weight, avoiding tobacco, limiting alcohol and managing chronic conditions.
SOURCE:
Fox News, March 11, 2026