In this week’s Health newsletter: The next challenge for sickle cell anemia treatment. Plus, why you smile back before you even realize it, doctors are finally starting to agree on when obesity is a disease, and deaths from this cancer can now be virtually eliminated. 

But first: Why strength training advice for women is often wrong. 

For years, women were told to train differently because of their hormones. New research suggests the fundamentals of building strength and muscle look remarkably similar across sexes.

Scientists cured sickle cell. Then their next challenge began.

Doctors are finally starting to agree on when obesity is a disease

Deaths from this cancer can now be virtually eliminated

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