Pien Huang

A new study suggests a link between high levels of fluoride and lowered IQ. It's heating up arguments over fluoridating drinking water, which dentists say is critical for protecting teeth.

Tropical storm Helene caused 'catastrophic' damage to Asheville’s water treatment and distribution system, cutting off at least 70% of the city’s drinking water supply. 

More Americans now use cannabis on a daily basis than alcohol. A sweeping new report says the federal government needs to better understand the risks to the public and get involved.

Chemicals used in food packaging and linked with health problems have been detected in the human body. The chemicals can move from packaging into food.

Some Olympic athletes prepared for Paris with a technique for acclimatizing to hot weather. Healthy people can take a cue from them, medical experts say, to build up tolerance for heat. <br>

Most states currently don't have age limits for buying zero-proof beverages that look and taste like beer, wine and liquor. But some researchers argue they could be a gateway into drinking for kids.

The Centers for Disease Control and Prevention warns of an increased risk of dengue infections in the U.S. this summer. The mosquito-borne virus is surging, and human travel is expanding its reach.

Chemical companies and water utilities are challenging the EPA’s recent rule putting limits on six PFAS chemicals in drinking water.

PFAS chemicals have been used for decades to waterproof and stain-proof consumer products and are linked to health problems.

The National Institutes of Health is sunsetting its influential COVID-19 treatment guidelines, used by millions of doctors to guide care during the pandemic.