When one partner wants to cut back, or stops drinking altogether, the changes can reverberate throughout a relationship.

Mr. Kennedy told executives of major food companies that he wants synthetic colors removed from their products. “Decision time is imminent,” a trade group warned its members.

The United States was the major funder of tuberculosis programs. Now hundreds of thousands of sick patients can’t find tests or drugs, and risk spreading the disease.

Many aspects of feline health remain a mystery, even to experts. Our cat-owning reporter learned this the hard way.

Five years after the novel coronavirus emerged, historians see echoes of other great illnesses, and legacies that are unlike any of them.

The small study in patients with a rare disorder that causes liver and lung damage showed the potential for precisely targeted infusions.

In a recent interview, the health secretary also suggested that the measles vaccine had harmed children in West Texas, center of an outbreak.

Intensive management of diabetes pays fewer dividends as patients age and raises the chances of hypoglycemia. But many people have not gotten the message.

How Republicans could change the program.

New York Times photographers covered Covid-19 throughout the world. These pictures, and the moments behind them, stayed with them.

Some scientists are confident that organs from genetically modified pigs will one day be routinely transplanted into humans. But substantial ethical questions remain.

She was legally blind and used a motorized wheelchair, but she managed to capture what she called the “ironic reality” of New York City on film.