New research has uncovered evidence that remnants of the COVID-19 virus may remain in some patients’ guts for months, contributing to the lingering symptoms known as long COVID. The remnants appear to trigger a drop in levels of the chemical serotonin, which may explain such symptoms as fatigue, brain fog and memory loss. About 20%…  read on >  read on >

Air pollution from heavy traffic may be driving pregnancy complications and health concerns for infants. Researchers who matched more than 60,000 birth records with air-monitoring data found that pregnant patients living in an urban area with elevated levels of nitrogen dioxide had higher rates of preterm birth. This included delivery before 28 weeks, according to…  read on >  read on >