Congo Ebola outbreak is 2nd largest, 2nd deadliest

The current Ebola epidemic in the Democratic Republic of Congo -- with 426 total cases, including 245 deaths -- is now the second largest and second deadliest in history, according to Thursday's report from the nation's Ministry of Health.

Chinese gene-editing scientist defends his research

The Chinese scientist who sparked an international outcry after alleging to have helped create the world's first genetically edited babies has raised the possibility of a third child being born, after announcing that a separate woman was pregnant at an early stage with a modified embryo.

This birth month is linked to higher rates of ADHD diagnosis

In US states where children must turn 5 by Sept. 1 in order to start kindergarten that year, children born in August, just before the cutoff, are more likely to be diagnosed with and treated for ADHD, according to a study published Wednesday in the New England Journal of Medicine.

Certain romaine lettuce is now safe to eat, US agencies say

Only the California counties of Monterey, San Benito, San Luis Obispo, Santa Barbara, Santa Cruz and Ventura are being investigated in the latest multistate outbreak of E. coli illnesses linked to romaine lettuce, the US Food and Drug Administration reported Wednesday.

Fattest states in America

Obesity is becoming the new normal in the United States, but the problem is bigger in some states than in others.

Research: Males may be more likely to become gaming addicts

Brain scans of men addicted to online gaming show changes in the brain regions associated with impulsivity, new research presented Wednesday at the annual meeting of the Radiological Society of North America finds. But no brain alterations are seen in addicted women, said the authors of the small study who compared the scans of addicted men and women to healthy volunteers.

FDA overhauls approval process as medical devices come under fire

As the US Food and Drug Administration publicizes its plans to overhaul the process for manufacturers that want to market medical devices in the United States, a year-long investigation by a nonprofit newsroom is reporting more than 80,000 deaths potentially linked to medical implants since 2008.