Measles could become endemic in the United States if routine childhood vaccination rates continue to decline, with up to 51 million illnesses over a 25-year period, according to a new study.

Jack and Debbie Lucas know firsthand how conditions like dementia can take a toll on an entire family.

We know sleep quality is vital for good health, that adolescence is an important time for brain development, and that teens don't always get a huge amount of sleep – and new research gives us some fresh insights into how that all fits together.

Researchers have developed a personalized blood test that may offer a faster, less invasive way to track high-grade glioma progression.

Learn what this study suggests regarding protein and longevity. Plus, why animal and plant-based proteins can be important for your health.

A 26-year-old Mammoth Mountain employee died from hantavirus. An investigation found mice droppings at the hotel where he worked.

A new study reveals that mice instinctively display rescue-like behaviors toward anesthetized peers, offering powerful evidence that prosociality may be hardwired in mammals.

A new study found that people who reported eating 10 ounces or more of chicken and other white meats every week were at increased risk of dying of cancer or other causes. Learn more about the study—and get expert advice on what you should do in light of it.

Marisa Peters noticed blood after bowel movements. Doctors dismissed them as changes from motherhood. 5 years later, she was diagnosed with rectal cancer.

Preliminary data from the U.S. Centers of Disease Control and Prevention says the U.S. has seen 8,485 cases of whooping cough in 2025. That's twice as many cases as this time last year, based on the CDC’s final tally. Rates of whooping cough started soaring l…

New research shows that exercise may protect brain function even when the body can’t produce ketones, a vital energy source for cognition.

H5N1 bird flu has now crossed into U.S. dairy cattle for the first time, and alarmingly, it did so through just one spillover from a wild bird. This single event, traced back to Texas in mid-to-late 2023, led to months of undetected cow-to-cow spread across m…

With probiotics galore, kefir could help get things moving in your digestive system. Dietitians say it’s the best dairy product to help you poop.

"Playing with mercury. My parents did this at school and at home. I played with asbestos..."

Researchers have produced the most detailed image to date of a bacteriophage, or phage—a kind of virus that kills bacteria.

Scientists argue that blanking out is its own state of consciousness, distinct from having your mind wander off.