The diabetes medication semaglutide has recently become a trendy weight loss treatment. But like every drug, there are ...

Vaccines on the childhood schedule have been tested in controlled trials involving millions of participants, and they are continuously monitored for safety after being rolled out. The schedule ...

Taking high-dose vitamin E supplements long-term can cause serious side effects like bleeding, stroke, and heart failure. Learn safe dosing and warning signs.

How everyday color additives in packaged foods may shape children’s behavior, biology, and long-term health and why science ...

In an NBC News data investigation of 31 states, about 70% of counties and jurisdictions fell below the target vaccination ...

Taking too much vitamin D can cause serious side effects. Learn the signs, why you might feel weird after taking it, and when to talk to your healthcare provider.

Pfizer faces a lawsuit in which women allege the drugmaker failed to warn them about the risks of meningioma associated with ...

A systematic review and meta-analysis has found that bisphosphonates—medicines commonly used to treat osteoporosis—may offer ...

While the new measles case is the first in Connecticut since 2021, there have been more than 1,800 cases of the disease ...

Doctors have long known that antidepressants come with side effects for cardiovascular and metabolic health. But a major analysis from a team of researchers in the U.K. has, for the first time, pulled ...

From sagging jowls and sulfurous burps to deflated breasts and surprise pregnancies, the side effects of GLP-1 weight-loss drugs have ranged from subtle to strange. Now, new research suggests that ...

*Editors’ note: This article was updated on October 7, 2025, to include additional information about combined vaccines. For decades, vaccines against measles, mumps, rubella, and varicella—or ...