Towana Looney lived with the kidney longer than any other transplant patient had tolerated an organ from a genetically modified animal.

© Jackie Molloy for The New York Times

Pregnancy-related mortality has risen sharply, and doctors have overlooked a particularly dangerous period: from six weeks to one year after the birth.

© Callaghan O'Hare/Reuters

President Trump’s executive order is altering scientific exploration across a broad swath of fields, even beyond government agencies, researchers say.

A 66-year-old man from New Hampshire became the fourth person to receive a pig’s kidney.

Although long considered a disease of aging, certain cancers are turning up more often in younger women, according to a new report.

A federal analysis that will shape the influential U.S. Dietary Guidelines questions alcohol’s overall benefits.

The results of a new federal analysis were drawn from studies conducted in other countries, where drinking water contains more fluoride than in the United States.

Dr. Vivek Murthy’s report cites studies linking alcoholic beverages to at least seven malignancies, including breast cancer. But to add warning labels, Congress would have to act.

Officials in other countries are warning about the health hazards of alcohol in any amount. Americans are still told that moderate drinking is safe. What gives?

It may be a longstanding practice, but critics say routine weight measurements are driving some patients away from care.