Well

Testing for H5N1 infection has been limited, and the outbreak was thought to be confined. But asymptomatic cows in North Carolina may have changed all that.

Among those with substance use disorders who have been referred to child welfare, less than half received medication or counseling.

The “car key conversation” can be painful for families to navigate. Experts say there are ways to have it with empathy and care.

Mammography can miss tumors in women with dense breasts, so their doctors often include ultrasound or M.R.I. scans. Patients often wind up paying the bill.

The change followed a sweeping review by England’s National Health Service that found “remarkably weak” evidence for youth gender treatments.

After a drawn-out global controversy over the coronavirus, the W.H.O. has updated its classification of how pathogens spread through the air.

In a first, a Colorado law extends privacy rights to the neural data increasingly coveted by technology companies.

The company reported results of clinical trials involving Zepbound, an obesity drug in the same class as Novo Nordisk’s Wegovy.

For the actor, compatibility comes down to food. You need to be able to share.

“Eldest daughter syndrome” assumes that birth order shapes who we are and how we interact. Does it?