Tuesday - July 14, 2026
University of Colorado-Boulder: Overpopulation Can Impair Fertility, New Study Explains Why
May 23, 2026
BOULDER, Colorado, May 23 (TNSjou) -- The University of Colorado Boulder campus issued the following news:

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Overpopulation can impair fertility. New study explains why

By Lisa Marshall

Scientists have reported it for decades: Overpopulation can impair reproduction.

Crowded chickens lay fewer eggs. Crowded mice have smaller broods. In humans, several studies have associated increased population density with reduced fertility. < . . .

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