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SmileDirectClub, a telehealth company that sold teeth-straightening devices through the mail and faced criticism from medical groups, said on Friday...

More than two decades ago, Congress declared that victims of government-caused nuclear contamination who developed cancer and other serious illnesses...

Why do we grow old and die?In the 19th century, the German biologist August Weismann argued that the machinery of...

There were an estimated 249 million cases of malaria around the globe last year, the World Health Organization said on...

Early one morning in February, a guard clanged on the door of David Mustiga’s jail cell on Rikers Island. Soon,...

As an unidentified canine respiratory illness continues to pop up in clusters around the United States — causing symptoms like...

The couple couldn’t quite remember when the 61-year-old man started to get sick. Was it before he retired the previous...

Life expectancy in the United States has begun to climb again as the threat of Covid-19 has receded, increasing by...

Dr. William P. Murphy Jr., a biomedical engineer who was an inventor of the vinyl blood bag that replaced breakable...

On the last Thursday of August, Jennifer Livovich spent the morning simmering beans and cheese sauce in her Boulder, Colo.,...