News · 18 June 2026
Male fruit flies: Mating changes their essential diet needs
Unsplash / v2osk
Scientists have found that the best diet for male fruit flies depends on whether they are reproducing, challenging old ideas about nutrition and ageing. Male flies needed cholesterol to mate, but if they weren't reproducing, they often lived longer without it. This suggests mating demands a lot nutritionally, with males possibly losing cholesterol through sperm and seminal fluid.
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