Robert F. Kennedy Jr. has sparked strong backlash after making unusual claims about fertility and sperm counts in a recent White House speech.

During his remarks, RFK Jr. described America’s declining birth rate as a national security issue, blaming “endocrine disruptors” — chemicals that he believes reduce fertility. He even credited former President Donald Trump for addressing the problem through environmental policies.

Kennedy stated that the U.S. fertility rate dropped from 3.5% in the 1960s to 1.6% today, below the replacement level of 2.1%. He went further, claiming that teenagers now have half the sperm count and testosterone of a 65-year-old man.

Medical experts quickly refuted the statement, pointing out that sperm counts generally decline with age, not the other way around. Critics on social media called the comment “bizarre” and “scientifically absurd,” questioning both his data and motives.

Others suggested the real cause of falling birth rates lies in economic struggles — not biology. “People aren’t having kids because they can’t afford to,” one user noted.

As debates grow louder, RFK Jr.’s remarks remind many how easily misinformation can spread when science meets politics.