RFK Jr. says sperm counts among men in the 1970s were reportedly double those of today’s teenage boys, warning of a crisis

trends, birth rates, and reproductive health in the United States. While concerns about demographic shifts are widely discussed, scientific research on the causes and scale of these changes is still ongoing.

Experts continue to study how health, environment, economics, and lifestyle factors interact to influence fertility rates. At the same time, policymakers continue reading …