The oldest known cases, discovered among hunter-gatherers in Siberian graves, contradict the theory that the disease once was mild.

The State Department is taking over much of the control of global health initiatives, for which critics say the department does not have the expertise.

Five stories show the hurdles that people with psychological diagnoses face when considering parenthood.

As tech giants rush to build infrastructure, some residents who live near data centers say a constant low-frequency vibration is ruining their health and homes.

Others who were in the facility have been allowed to return to their homes in recent weeks for monitoring by local health officials.

With support from Markwayne Mullin and Robert F. Kennedy Jr., the kratom industry is pursuing a potentially lucrative policy. Mr. Mullin owns equity in a company that could benefit.

A new study of bilingual speakers suggests that a single “grammatical engine” in the brain can power multiple languages at once.

The health secretary is trying to restart the work of a panel that advises the government on vaccines, after a judge froze its decisions and prevented it from meeting.

The United States is reliant on unpaid family caregivers, and millions of adult children are caring for parents who didn’t really care for them.

Trials are beginning on several drugs that have shown promise in preliminary studies against the virus that is causing the current outbreak.

Think ticks are limited to rural areas and the wilderness? Think again.

One-third of Americans shoulder health care debt. Insurers are being asked to consider lending money to Obamacare consumers who can’t afford higher deductibles.

Actress and author, Ayanda Borotho, indulged her Instagram followers with her ‘airy’ lounge after a chic couch revamp.

Her decades of work on Huntington’s disease helped lead to the creation of a genetic test for the devastating condition. Why didn’t she take it herself?

This popular term is often misused, experts say, which may cause more harm than good.

Fertility specialists, biotech companies and ethicists are divided over whether progress in early gene editing would wipe out diseases or trigger a rush toward enhancement.

Two reports by U.S. investigators reveal how Medicare Advantage is quick to reject requests for short-term nursing home or inpatient rehab services.

Hundreds of Kenyans have marched through the streets to oppose a quarantine facility that would be reserved exclusively for American patients.

The parasitic, flesh-eating fly has now been confirmed in cows, goats and dogs.

OpenEvidence, a fast-growing start-up, is using artificial intelligence to help doctors find answers to clinical questions for diagnosis and treatment.

His five-volume “Children of Crisis” series, published between 1967 and 1977, drew on his conversations with American children whose voices were not often heard.