Health officials warn of potential measles risk at LAX and Disneyland after international traveler's visit. Here's what to know about windows of exposure.

New research reveals why cancer patients may have lower Alzheimer's risk. Scientists discover that cancer releases a protective protein that clears brain plaques.

New study reveals grandparents who care for grandchildren show improved memory and verbal fluency, potentially slowing mental decline in older adults.

Nearly one in four adults over age 50 may have a hidden brain condition tied to sharply higher dementia risk, even without a history of stroke, researchers warn.

Tuberculosis outbreak hits a San Franscisco high school, with 3 active TB cases and over 50 latent infections. Health officials require testing for all students and staff.

Discover natural ways to quiet "food noise" and reduce cravings without weight-loss medications. Experts share tips to manage excessive food thoughts.

Chicago health officials issue urgent alert after seven meningococcal disease cases, including two deaths. Know the symptoms and warning signs.

How long are you contagious with the flu? Experts say you can spread the virus for five to seven days after symptoms start, sometimes longer for children and adults.

Viral 75 Hard fitness challenge promises rapid weight loss through extreme daily rules and mental toughness, but experts warn the intense regimen may be unrealistic.

Swedish researchers discover a blood test that can detect Parkinson's disease up to 20 years before symptoms appear, offering hope for early intervention.

Colorado officials declared a disaster emergency after a presumptive bird flu outbreak hit a facility with 1.3 million chickens in Weld County. The state is mobilizing resources.

Conversation starters, celebrity health reveals, healthy living hacks and medical cautions: Here's what you missed in Fox News Health this week

In a death-defying feat, Alex Honnold of the U.S. scaled Taipei 101 in Taiwan with no ropes or support. Scientists reveal how his fearless brain is different from other brains.

New research reveals marijuana users face 29% higher heart attack risk and doubled cardiovascular death chances, plus brain and sleep health impacts.