Science

Male mice are terrified of bananas. Here's why.



Scientists recently discovered something about male mice that’s utterly bananas: The distinctive scent of a banana stresses them out.

Researchers from McGill University in Montreal, Quebec, learned about this unusual fruit aversion while analyzing spiking stress hormones in male mice when the males were close to pregnant or lactating females. The scientists reported in a new study that the males’ hormonal shifts were triggered by the presence of a compound called n-pentyl acetate in the females’ urine. It also happens to be the compound that gives bananas their distinctive smell.



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