‘Bluetoothing’: Blood-Sharing Drug Trend Fuels Alarming Global H.I.V. Surge

The practice, in which users inject the blood of already intoxicated individuals, has fueled one of the fastest-growing H.I.V. epidemics in the Pacific and grown widespread in South Africa.

News
She’s Starting a Blood Bank for Zoos

Captive animals sometimes need a transfusion, but the typical approach to blood banking isn’t practical for zoos and aquariums. One veterinarian is testing a solution.

News
What To Know About the ‘Kissing Bug’ Disease: Symptoms, Risks and More

Though some researchers believe it should be labeled endemic in the United States, most Americans don’t need to worry about getting sick.

News
Just How Harmful Is Vaping? More Evidence Is Emerging.

A new study that found high levels of heavy metals in popular nicotine vapes adds to concerns about the products.

News
Maybe It’s Not Just Aging. Maybe It’s Anemia.

Significant numbers of older people have the condition. Many find relief with an effective treatment that is being more widely prescribed.

News
How Healthy Are Mangoes?

The luscious tropical fruit is packed with flavor — and nutrients.

News
Elizabeth Holmes’s Partner Has a New Blood-Testing Start-Up

Billy Evans has two children with the Theranos founder, who is in prison for fraud. He’s now trying to raise money for a testing company that promises “human health optimization.”

News
Climate Change Is Stressing the World’s Blood Supplies

Extreme weather disasters, increasing as the planet warms, can curb blood donations while increasing demand, a new analysis found.

News
How Blueprint Founder Bryan Johnson Sought Control Via Confidentiality Agreements

That control is starting to fray as Mr. Johnson, a longevity guru known for performing experiments on his body, faces a backlash over the agreements.

News
Scientists Describe Rare Syndrome Following Covid Vaccinations

In a small study, patients with the syndrome were more likely to experience reactivation of Epstein-Barr virus and high levels of a coronavirus protein.

News