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flag Japanese quails laying larger eggs live 20% shorter lives, study finds.

flag A new study on Japanese quails suggests that investing more energy into reproduction, such as laying larger eggs, accelerates aging. flag Researchers found that females selectively bred to lay larger eggs lived an average of 595 days, about 20% less than those bred to lay smaller eggs. flag The study supports evolutionary theories that high reproductive effort comes at a cost to longevity and immune function.

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