A new study finds an open excess deaths gap between Republicans and Democrats in 2021, after access to the vaccine was expanded to all adults. Here, a Walgreens worker prepares vaccine injections for school...

Dr. Chris Van Tulleken took part in a month-long experiment. He ate 80% of his calories from ultra-processed food. He explains what happened in his new book, Over-processed people. Jonny Storey/Chris Van Tulleken hide...

It was 118 degrees after 5 p.m. in Phoenix, Arizona on July 18, 2023. More than 80 million people have heat warnings as unrelenting temperatures continue to bake across the western and southern US...

NPR’s Ayesha Rascoe talks with Dr. David Epley about the increase in myopia and the reasons why, especially among children....

Doctors are starting to face a flood of patient messages, and some healthcare companies are billing for clinical advice provided in this way. José Carlos Cerdeno Martinez/Getty Images hide caption toggle caption on/off José...

Andres Matamoros wipes sweat from his face as he sells fresh fruit and cold coconuts from his roadside stand on June 28, 2023, in Houston. Nearly 400 daily maximum temperature records were set in...

AbbVie’s Humira was the world’s best-selling drug for many years. It now faces competition for knockoffs that cost a fraction of its price. David J. Philip/AP hide caption toggle caption on/off David J. Philip/AP...

In-N-Out bars employees in five states from wearing masks unless they have a medical certificate, according to internal company emails leaked to social media last week. An In-N-Out Burger sign is seen on June...

Opill, the first daily oral contraceptive to be available over the counter in stores and online, was approved by the FDA last week. Perrigo Co. hide caption toggle caption on/off Perrigo Co. Opill, the...

In 2018, Delta Airlines unveiled new uniforms made from a synthetic blend fabric. Shortly thereafter, the flight attendants began to fall ill. Alden Wicker explains how toxic chemicals get into clothes To dye....