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Published online 1 February 2006 | Nature | doi:10.1038/news060130-6
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Expectant dads get chubby
Finding sympathetic pregnancy in monkeys suggests the fat is useful.
Male monkeys gain weight during their partner's pregnancy, and this finding hints at a biological basis for expectant fathers' expanding waistlines.
Men commonly mirror symptoms of pregnancy, such as weight gain, nausea and backache.
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