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Birth defects are the leading cause of death in infants. The risks often start before some women even know they're pregnant.

The first human case of the flesh-eating parasite "New World screwworm" has been detected in the United States in a person who had recently traveled to El Salvador. NBC News medical contributor Dr. Kavita Patel talks about the risks to humans and the ...

Favoring an older, traditional type of vaccine over newer technologies may be misguided, vaccine experts say.

The Department of Health and Human Services said that the first human case of a flesh-eating screwworm parasite has been detected in the U.S. The individual involved was known to have traveled to El Salvador.

The new school year means new routines for a lot of families. Board-certified dermatologist Dr. Angela Lamb joins TODAY to share skin care tips for children and parents, including cleaning skin after physical activity, being mindful of acne ...

The parasite -- the larvae of the new world screwworm fly -- can devastate cattle herds and is rife in parts of Central America.

An outbreak of Legionnaires' disease has killed six people and sickened more than 100 others in New York City. Some health officials warn that the conditions that led to this outbreak pose a threat to people across the country. NBC News' Priscilla .. ...

The disruptions follow multiple efforts by the Trump administration to block this type of care for patients younger than 19.

As more places in the U.S. look to ban fluoride in drinking water, it's more important than ever to know the best ways to care for your teeth and gums.

Many people don't know they can fight a health insurance denial, let alone how to do it.