Obesity is a known risk factor for severe complications of Covid-19. But scientists are learning that the link between extra pounds and severe Covid-19 may be even stronger than they thought. This week, the U.S. Centers for Disease Control and Prevention said that people who are merely overweight, not just the obese, may be at high risk of serious disease from the infection. Emma Court reports that the warning means about two-thirds of Americans could face higher risks.

See omnystudio.com/listener for privacy information.