A morning Tai Chi class at Elizabeth Street Garden in New York, on Sunday, June 11, 2023. Decades of research have established that...

Ian Otbot, 8, does his homework in his bedroom at home in Pennsylvania on July 15, 2025, as his father, Gerry Nel Otbot, looks on. Ian...

A sign points to a measles testing site set up by the public health department in Seminole, Texas, Feb. 26, 2025. There have now been...

The New York Times asked dementia specialists and seven families who have faced the disease to share advice for moving forward after a...

Nutrition experts say the keys to healthy eating lie in focusing on nutrient-rich foods and making them tasty, too. (Seb Agresti/The New...

A nurse prepares a flu shot for a six month old patient in Pittsburgh, Feb. 28, 2020. Thimerosal, an obscure mercury-based preservative,...

Movement can be an effective treatment for back pain. (Theodore Tae/The New York Times) By Christine Yu When your lower back hurts, your...

An autistic boy with his mother at home in Texas, Aug. 5, 2023. There is no blood test or brain scan to determine who has autism, and...