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

on methodology and population studied.

Public health researchers generally agree that lifestyle factors—such as diet, stress, and overall health—can influence fertility, but there is no single agreed-upon cause for national or global birth rate declines.

Sperm Count Research and Scientific Debate

Kennedy also referenced concerns about declining sperm continue reading …