University of Montreal researchers found cannabis also damages memory and makes it harder for adults and adolescents to react properly to instructions.

Adar Poonawalla is no stranger to gambles. He owes his multibillion-dollar empire to a series of big bets that paid off handsomely. Cyrus Poonawalla, his father, made his own fortune on horses—and then multiplied it by making another bet in 1966: that he could make more money producing vaccines than he could on horse breeding and racing. He

The experience showed how hard it is for many people to get potentially lifesaving treatments.

The masks will be distributed at pharmacies and community health centers, but some public health experts said the effort was coming too late.

There is some evidence to suggest COVID-19 vaccines can lower the risk of long-lasting symptoms among breakthrough cases, but the jury is still out, experts say. 

The study, published Wednesday in the Canadian Medical Association Journal, is billed as the largest single-country trial of remdesivir reported to date.

People who watch TV for four hours or more a day are a third more likely to suffer from blood clots than those who watch for two-and-a-half hours, University of Bristol researchers have found.

It is too soon to know, scientists say, but mild initial illness may not signal reduced risk.

Sex differences in Covid death rates vary widely from state to state, suggesting they are rooted in behavior as well as biology.