The New York Times

Free apps from Google, Samsung and Apple can help you track your diet, exercise and well-being — and provide vital information during emergencies.

UnitedHealth Group, CVS Health and Cigna are suing states over new laws targeting their pharmacy businesses.

A British nonprofit helps patients escape the stress and boredom of ward life by watching the latest blockbusters.

The human microbiome is essential to our health, but scientists have only begun to understand why. Two researchers set out to map this largely uncharted terrain.

A lawsuit filed by Children’s Health Defense, an organization founded by Robert F. Kennedy Jr., claims that vaccines caused the twins’ deaths. But a grand jury in Idaho has indicted her on charges of suffocating them.

Trump promised a record display of some 850,000 pyrotechnics for the country’s 250th birthday. The Park Service warned it could get dirty.

As the administration works to expand gun rights, hospitals and community groups have lost funding, and reports on preventing firearm injuries have vanished from government websites.

The C.D.C.’s tobacco control office has been shut for more than a year. After its most prominent antismoking campaign went off the air, calls to 1-800-QUIT-NOW lines have plummeted.

Popular communication methods for nonspeaking autistic people have ignited a fierce debate over what counts as evidence of hidden cognitive abilities.

The makers of nicotine pouches are building new plants and expanding to meet demand. While influencers claim health benefits, experts warn the products can be highly addictive.

The neurobiologist Erich Jarvis studies the few species capable of speech. He has long hoped to genetically engineer an animal that can make new calls.

Public health experts said there were more cases than usual of the disease caused by cyclospora, which is spread through contaminated food and drink.

While relief could come to the Great Lakes and the far Northeast over the weekend, the Mid-Atlantic and Southeast will stay hot.