If you’re looking for another reason to appreciate your sister, here’s one with a scientific twist.

Research suggests brothers may live longer when their sisters can pull off something extraordinary later in life.

But that longevity boost doesn’t seem to extend to spouses — a sign, scientists say, that the benefit comes from genes rather than shared lifestyle.

Past research has shown that women who have children in their 40s and 50s without fertility treatments tend to live longer after menopause than those who stop childbearing earlier.

One study even found that women who had their last child after age 33 had twice the odds of reaching 95 or older compared with those whose final birth came by age 29.

Scientists have long wondered whether a mother’s ability to have children later in

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