About 25% of U.S. health care spending annually is wasteful, according to a study published Monday in JAMA. See where all the money goes on our interactive charts.

Major retailers—including Kroger, Walgreens, and Walmart—have announced that they will stop selling e-cigarettes, amid growing uncertainty about the products' safety.

The Supreme Court on Monday denied drugmaker Acorda Therapeutics' request to hear a case regarding patents for the company's multiple sclerosis treatment Ampyra, meaning generic versions of the drug can remain on the market.

Two U.S. researchers and a British scientist who discovered how cells sense and adapt to changes in oxygen levels have won this year's Nobel Prize in Physiology or Medicine, the Nobel committee announced on Monday.

South Bend, Indiana, Mayor Pete Buttigieg (D), who is seeking the 2020 Democratic nomination for president, on Monday released a plan intended to lower U.S. prescription drug costs that calls for allowing federal officials to negotiate the prices of drugs covered by some public health plans, capping some U.S. residents' out-of-pocket costs for drugs, and more.

The Federal Aviation Administration requires airlines to carry certain lifesaving drugs onboard every flight but, in recent years, a growing number of airlines have received exemptions for planes to fly without all the drugs because of shortages.

After news broke that Sen. Bernie Sanders (I-Vt.) was hospitalized for chest pain Tuesday, his presidential campaign on Friday disclosed that Sanders experienced a heart attack and was treated at Desert Springs Hospital Medical Center in Las Vegas.

CDC on Thursday said it expects the United States will maintain its World Health Organization designation as a country that has eliminated measles.

Dorene Rentz, a neurology professor at Harvard Medical School, has studied Alzheimer's disease for over 30 years, and now, her husband has joined one of her biggest studies as a participant.

In a letter to the editor published this week in the New England Journal of Medicine, Mayo Clinic physicians wrote some patients sickened with a mysterious lung illness linked to e-cigarettes and vaping have shown airway and lung damage resembling a chemical burn.