Health

A new study found persistent effects of smoking on the adaptive immune system, but how this translates to health risks remains unclear

Debate about brain death has prevented needed revisions to the Uniform Determination of Death Act

Recent research found a species of bacteria living in semen that’s associated with infertility and has links to the vaginal microbiome

The Food and Drug Administration is scheduled to release a proposal to ban formaldehyde in hair-straightening products a decade after it was classified as a carcinogen

Four years into the pandemic, many people have had COVID more than once—but the health consequences of repeat infections are not yet clear

Vaccines that target tumors with specific genetic mutations in pancreatic and other cancers have shown promise in early-stage trials

Despite some lawmakers’ claims, “cure-based recovery” for gay and transgender people comprises one of psychiatry’s longest and darkest chapters. We shouldn’t inflict it on today’s kids

Scientists are ramping up production of the isotope actinium 225, which could help treat prostate cancer

Three major waves of opposition to transgender health care in the past century have cited faulty science to justify hostility

The pandemic early exposed weaknesses in CDC’s laboratories. Organizational and culture changes there are good first steps, but more must be done

Very young children’s developing immune systems respond to the COVID-causing virus SARS-CoV-2 very differently than do those of adults

As EPA tightens air pollution standards for particulate matter, new research suggests some components of that pollution could worsen with climate change