When you have COVID-19, when are you most infectious? Researchers are getting closer to an answer, with a new study finding that folks exhale the highest amounts of virus during the first eight days of their illness. Scientists found that patients exhale quite a bit of virus during the first several days — as many…  read on >  read on >

Young people who vape are more likely to experience chronic stress, though it isn’t clear whether it was the stress that brought on the vaping or the vaping that caused the stress, investigators say. “Research is starting to show how vaping affects young people’s physical and mental health,” said Dr. Teresa To, a senior scientist…  read on >  read on >

The U.S. Food and Drug Administration on Monday gave the green light to new COVID boosters for Americans, setting the stage for the updated vaccines to become available within days. The COVID-19 shots from Pfizer and Moderna will join the flu shot and newly approved RSV shots as part of a three-pronged public health strategy…  read on >  read on >

As this summer has shown, the massive smoke plumes generated by wildfires can dirty the air of regions many miles away. Now a new study is raising the question of whether that pollution is contributing to suicides in rural America. Researchers found a correlation between air pollution from “drifting” wildfire smoke and a rise in…  read on >  read on >

Millions of people who suffer from sleep apnea go to bed at night with a motorized device called a CPAP machine. Now, two new studies confirm the treatment has significant benefits not just on quality of sleep, but also for keeping people’s hearts healthy. Together, the studies may offer more reasons to endure the not-always-comfortable…  read on >  read on >

Could an algorithm take your job someday? Concerns about artificial intelligence, or AI, are plaguing U.S. workers, according to a new American Psychological Association poll. Some workers are uncomfortable with the way their employers are tracking them, while others worry that AI will make their jobs obsolete. “Employers interested in investing in artificial intelligence systems…  read on >  read on >