A new form of the coronavirus spreading rapidly in New York City carries a worrisome mutation that may weaken the effectiveness of vaccines, two teams of researchers have found.

More than one in five diabetes patients admitted to hospital with COVID-19 die within 28 days, according to a study conducted in France.

One day, physicians may be able to look at an African American's skin color, and, with the help of other determinants, know if prescribing vitamin D supplements would lower that person's risk of getting cancers of the prostate, colon, rectum, or breast.

Thousands of U.S. military personnel are refusing or delaying COVID-19 vaccination, even as service members are being deployed to help give shots at vaccination centers nationwide.

Internal government emails reveal Monsanto owner Bayer and industry lobbyist CropLife America have been working closely with US officials to pressure Mexico into abandoning its intended ban on glyphosate, a pesticide linked to cancer that is the key ingredient in Monsanto’s Roundup weedkiller.