Mike Stobbe, Associated Press

A federal judge in California says fluoride in drinking water poses some level of risk to the intellectual development of children, and U.S. environmental regulators need to address it.

The agency says about 107,500 people died of overdoses in the U.S. last year, down 3% from 2022.

Birth rates have long been falling for younger women, but last year, birth rates fell for all women younger than 40 and were flat for women in their 40s.

Massachusetts General Hospital said Thursday it’s the first time a genetically modified pig kidney has been transplanted into a living person.

For years, scientists have known people who use neti pots can become infected with a brain-eating amoeba if they use the wrong kind of water.

The U.S. syphilis epidemic isn’t abating, with the rate of infectious cases rising 9% in 2022, according to a new federal government report on sexually transmitted diseases in adults.

The Centers for Disease Control and Prevention said Friday that COVID-19 remains the main cause of hospitalizations and deaths in the country.

U.S. life expectancy is only back to 77 years, 6 months — about what it was two decades ago.

The flu season traditionally ramps up in December or January. But it took off in October last year and is making a November entrance now.

In her letter to President Biden, she didn’t say exactly why she was stepping down, but said the nation is at a moment of transition as emergency declarations come to an end.

U.S. health officials released data Tuesday showing how chlamydia, gonorrhea and syphilis cases have been accelerating.

Disease investigators have linked the infections, including some found in blood, urine and lungs, to EzriCare Artificial Tears.

A CDC study released Thursday found only 93% of kindergartners were vaccinated against measles, tetanus and certain other diseases in the 2021-22 school year.

Current reports suggest deaths may be down about 3% from 2020 and about 7% vs. 2021.

In the first two years of the COVID-19 pandemic, the estimated American lifespan has shortened by nearly three years.