A large, new study finds children and adolescents are twice as likely to develop long COVID after a second COVID infection.

1 in 5 women and 1 in 10 men from Generation X and the tail end of the Baby Boom meet the criteria for addiction to ultra-processed foods, researchers say.

A new study finds babies exposed to a common dog allergen are nearly 50% less likely to develop asthma by the age of five. But the same benefit isn’t seen with cats.

Researchers unlock the molecular secrets behind Spanish supercentenarian who lived 117 years free of cancer, heart disease, and dementia.

“Challenges with memory and thinking have emerged as a leading health issue reported by U.S. adults,” especially those under 40, according to the author of a new study in the journal Neurology.

“Challenges with memory and thinking have emerged as a leading health issue reported by U.S. adults,” especially those under 40, according to the author of a new study in the journal Neurology.

A new study finds women with hyperemesis gravidarum, a severe form of pregnancy-related nausea and vomiting, are more than 50% more likely to develop 13 serious mental health conditions.

What started as a normal milestone for 14-year-old Liliana Castaneda turned into a fight for her life. Heavy bleeding was originally dismissed as stress—but it was actually a rare vaginal cancer.

A young boy in Los Angeles donates stem cells to help his father beat leukemia. Doctors at Cedars-Sinai say he is one of their youngest and bravest donors.