The smoke from wildfires is dangerous for your lungs, but tiny particles from the smoke can also enter your brain and cause lifelong neurological issues, a new animal study suggests. Once that happens, the particles may put people at risk for everything from premature aging and various forms of dementia to depression and even psychosis,…  read on >  read on >

Regular physical activity has all sorts of benefits, and now researchers say it may help ward off serious pneumonia. Until now, it wasn’t clear how exercise affected the risk of pneumonia, an infection of the lung tissue usually caused by bacteria or viruses. To find out, researchers analyzed 10 studies that included a total of…  read on >  read on >

Public health experts have long recommended getting a seasonal flu shot, but a new study suggests there’s hesitancy about that vaccine, too. Physicians and pharmacists can play a key role in flu shot uptake, the research shows. Only about 44% of people who had a health care provider got their flu shots, the study found,…  read on >  read on >

Dirty air could cancel out some of the brain benefits of exercise, a new study suggests. “Physical activity is associated with improved markers of brain health in areas with lower air pollution,” said study author Melissa Furlong. “However, some beneficial effects essentially disappeared for vigorous physical activity in areas with the highest levels of air…  read on >  read on >

Booster doses of Pfizer’s coronavirus vaccine set recipients up to effectively withstand the ravages of both the Delta and Omicron variants, a group of new studies suggest. Boosted folks are 90% less likely to die from a Delta infection than people relying solely on the initial two-dose vaccination, Israeli data show. That protection will be…  read on >  read on >

People who get cochlear implants to treat severe hearing loss may develop new bone growth in the ear — and it may lessen any hearing they have left, a new study hints. The researchers found that among 100-plus adults with cochlear implants, two-thirds showed evidence of new bone formation near the implant within four years.…  read on >  read on >

First, the COVID-19 pandemic brought panic, with successive waves of infection and death, including the emergence this year of the Delta variant. Then vaccines offered the promise of a recovery, with a speed — and on a scale — never before seen. But now, the Omicron variant is sending Americans on another emotional roller-coaster ride…  read on >  read on >