MGH, Broad researchers develop Big Data tool that can predict which COVID variants will likely become dominant.

The brain of a woman with a family history of early-onset Alzheimer’s disease who lived dementia-free into her 70s is providing researchers with important information about the pathobiology of Alzheimer’s dementia and possible ways to prevent or treat it.

As studies signal serious health consequences, specialists scramble to treat acute cases and reinforce limits that define moderate use.

A large study challenges the theory that light alcohol consumption benefits heart health.

As Omicron fades, specialists seek answers for patients who can’t shake symptoms.

Mistrust of vaccine is high among people of color in U.S. and U.K., but unequal access appears to be greater barrier in U.S., researchers say.

As Omicron rapidly recedes, some countries are seeing a new version of the variant, dubbed BA.2

One in five youths with substance-use disorders may have undiagnosed autistic traits, say researchers.

Harvard researchers study "super-aging" minds for clues to possible interventions for the rest of us.

With Omicron on the decline in some states, pandemic experts permit themselves hope, at least for the near term.