Health News

USC scientists have discovered a way to create a potentially renewable supply of genetically engineered immune cells that can attack cancer and strengthen the body’s natural defenses. By growing and modifying immature immune cells rather than mature ones, researchers developed a system that can continuously produce tumor-fighting cells inside the body.

Yale scientists have uncovered how the stress hormone cortisol helps the brain turn emotional experiences into stronger, longer-lasting memories. The discovery reveals that stress can reshape communication between brain networks involved in emotion and memory, potentially explaining why certain moments are so difficult to forget.

Scientists have discovered how to turn a protein that normally fuels cancer growth into a weapon against it. By activating PPARD in immune cells, researchers made them better at burning fat and attacking tumors, slowing or stopping cancer growth in laboratory experiments. The approach showed promise against colorectal, breast, and ovarian cancers, as well as melanoma.

Scientists have uncovered a hidden biological mechanism that helps explain how exercise can reverse some of the damage caused by muscle aging. The key is a gene called DEAF1, which becomes overactive with age and interferes with the muscles’ ability to clear damaged proteins and repair themselves. Exercise can help restore this balance, allowing older muscles to rebuild and regain strength, although the benefits may diminish when the system becomes too disrupted.

Even under general anesthesia, the human brain can analyze language, recognize different types of words, and predict what comes next in a story, according to a surprising discovery by Baylor researchers. The findings challenge our understanding of consciousness and suggest that the unconscious brain is far more capable than scientists previously realized.

Eating late at night could be putting your liver at risk, according to a large study led by Oregon Health & Science University. Researchers analyzed data from nearly 200,000 people and found that those who regularly ate after dinner or around bedtime had a 20% to 30% higher risk of liver disease, including fatty liver disease and cirrhosis.

Scientists have discovered that unusually small cancer cells carrying extra chromosomes can be far more aggressive than larger ones, growing faster, spreading more readily, and resisting common treatments. The surprising finding could help explain why some tumors are especially dangerous and provide a new way to predict cancer outcomes.

A rare examination of an Alzheimer’s patient’s brain revealed that regions cleared of amyloid plaques had remarkably little of the harmful tau buildup associated with memory loss, while neighboring areas showed extensive damage. The discovery suggests that removing amyloid may have lasting protective effects and could help slow Alzheimer’s progression, especially when treatment begins early.

Strokes are becoming alarmingly common among younger adults, with rates nearly doubling among people ages 20 to 54 over nearly three decades. Researchers found that blocked blood vessels in the brain accounted for much of the increase, while high blood pressure, diabetes, and substance use also became more common among younger stroke patients. Although survival rates have improved, more young adults may now face the lasting consequences of stroke.

Popular diabetes and weight loss drugs such as Ozempic and Wegovy have been linked to a slightly increased risk of a rare condition that can cause sudden, potentially permanent vision loss. Although the risk remains very low, Rutgers researchers say the findings warrant attention as millions of people turn to GLP-1 medications.