It’s not just what makes males into males. The sex chromosome also influences health in hidden ways, some experts believe, and may even explain why men have shorter life spans.
Success against sickle-cell would be “the first genetic cure of a common genetic disease” and could free tens of thousands of Americans from agonizing pain.
As of 2016, about 80% of people in genetic studies were of European descent. We know humans originated in Africa but we don’t know what we did before we emigrated — we don't know our own history.
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