Chemical contaminants could be playing a key role in soaring, worldwide male infertility rates, with some studies showing a 50 percent reduction in sperm quality over the past 80 years. Even dogs are more infertile than before.
What’s to blame for the rising rates of infertility in men and male dogs? Two common chemicals you have around the house: DEHP, which is found in carpets, flooring, upholstery, clothes, wires, toys, and other household items, and polychlorinated biphenyl 153, which is widely detected in the environment and in human and pet food, despite a global ban on the substance, according to a study in Scientific Reports.
The researchers, from the University of Nottingham in the U.K., say the fact that fertility rates in domestic male dogs are also declining provides evidence that there’s a household connection. Specifically, they found that chemical exposure decreases sperm motility (which impedes fertilization) and damages DNA, impairing cell function.
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