The majority of antibiotic prescriptions for U.S. seniors and Black and Hispanic Americans are inappropriate, a new report reveals. For the study, researchers analyzed federal government data on more than 7 billion outpatient visits to doctors’ offices, hospital clinics and emergency departments nationwide between 2009 and 2016. Nearly 8 million visits (11%) led to antibiotic…  read on >  read on >

Genetic mutations build up faster in the brain cells of Alzheimer’s disease patients than in other people, new research reveals. The discovery could point the way to new Alzheimer’s treatments. DNA errors called somatic mutations can occur in brain cells as people age. The authors of this study compared somatic mutations in hippocampal and prefrontal…  read on >  read on >

Larger and more intense wildfires in the U.S. Pacific Northwest are causing a spike in air pollution across North America that endangers millions of people, a new study warns. Wildfire smoke has been linked to significant respiratory problems, and may also cause heart and pregnancy complications. “Wildfire emissions have increased so substantially that they’re changing…  read on >  read on >

A prior COVID-19 infection may provide unvaccinated adults with as much immunity against reinfection as the Pfizer-BioNTech or Moderna mRNA vaccines, new research suggests. However, the study was conducted before the surge of the highly transmissible Omicron variant. “We found that, before the emergence of the Omicron variant, natural immunity provided a similar degree of…  read on >  read on >

The most common treatments for sleep apnea are mechanical — CPAP machines, mouthguards and the like. But researchers think they’ve found a drug that might ease sleep apnea in some. The drug sulthiame, normally used to treat epilepsy, appeared to reduce breathing pauses by more than 20 events an hour, on average, in obstructive sleep…  read on >  read on >