Scientific American

Covid Deaths Left Orphans. The Stress of That Loss May Carry Lifelong Risks.
Avion Simon and his siblings, C.J., and Momo, lost their mother to Covid-19. Science has some ideas about the health hurdles that Covid orphans could face in the future.

The Weight of Stigma: Heavier Patients Confront a Bias
A look at how a bias on body size affects care of heavier patients, something the medical community is beginning to recognize, and do something about.

What's in a Number? Some Research Shows That a Lower B.M.I. Isn't Always Better.
Biased ideas about a link between body size and health have led many people to dismiss unexpected scientific findings.

Health Risks of Vaping: Lessons From the Battle With Big Tobacco
Like cigarette manufacturers decades ago, e-cigarette makers have pitched their products as fun and safe. But nobody knows what the risks are.

Why History Urges Caution on Immunity Testing
After past outbreaks, workers with proof of antibodies were in demand. But history urges caution.

Coronavirus: Lessons From Past Epidemics
Dr. Larry Brilliant, who helped eradicate smallpox, says past epidemics can teach us to fight coronavirus.

Coronavirus, Smoking, Vaping: Studies From the Past That Alarm Scientists
COVID-19 attacks the lungs. Past research shows that smoking and vaping may amplify the coronavirus.