Articles by

Tina Hesman Saey

Many U.S. babies may lack gut bacteria that train their immune systems

About three quarters of babies born in the United States may not have enough friendly microbes in...

A genetic test may predict which weight loss drugs work best for patients

People trying to lose weight often count calories, carbs, steps and reps and watch the scales. Soon,...

Personalized gene editing saved a baby, but the tech’s future is uncertain

When a baby born in Philadelphia was announced as the first person to get a gene therapy...

FDA plan to ban fluoride supplements baffles and alarms dental experts

A decades-old dental health treatment may soon vanish in the United States. Access to fluoride supplements, prescribed...

Humans have shockingly few ways to treat fungal infections

Fighting fungi isn’t easy. Season two of the streaming series The Last of Us has arrived on...

Putrid plants can reek of hot rotting flesh with one evolutionary trick

Some plants stink of rotting meat or dung, which helps them attract flies for pollination. How...

Bird flu in cows shows no signs of adapting to humans — yet

WASHINGTON — When traces of H5N1 bird flu showed up in cow’s milk last year, it raised...

Autism rates rose again. Experts explain why

Autism is more common than ever before, a new report suggests. As of 2022, about 1 in...