Diseases, Conditions, Syndromes

U.S. officials change virus risk groups, add pregnant women

The nation's top public health agency on Thursday revamped its list of which Americans are at higher risk for severe COVID-19 illness, adding pregnant women and removing age alone as a factor.

Neuroscience

Does using marijuana affect a person's risk of stroke?

The jury's still out on whether the use of marijuana may increase the risk of stroke. While several larger studies have found an increased risk, other studies have found no such increased risk. Adding to the debate is a new ...

Genetics

Decoding sickle cell disease

When Lamarcus Jean visits the Hematology Clinic at Dana-Farber/Boston Children's Cancer and Blood Disorders Center, he makes himself right at home. The 6-year-old, whom his mom, Stephanie, describes as "wise beyond his years," ...

Genetics

Genome editing at the crossroads of scandal and cure

Genetic modification of babies in China one year ago was universally condemned. At the same time, CRISPR treatments are on their way into our clinics. Jacob Corn explains the difference.

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