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![]() ![]() ![]() In fact, the grandmother's role was so important that it had a huge impact on whether or not children survived. The "grandmother effect," as it's known, postulates that in hunter-gatherer societies, grandmothers played a vital role in finding food and raising children. For the past 55 years, scientists have theorized that a major reason why humans live so much longer past their reproductive years than other species is because of grandmothers.
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