Vitamin D supplements may be effective in treating long COVID.

Dr. Alex Marson, MD, PhD, is a professor of medicine at the University of California, San Francisco. We discuss the biology of the immune system and cancer, and everyday choices that can increase or decrease your cancer risk, several of…

COVID didn’t just infect you, it may have altered your hormones and immune system. What we’ve seen in thousands of cases is now backed by emerging research: certain viral infections, including COVID and Epstein-Barr (mono), can create lasting changes in…

Long COVID is associated with persistent immune dysregulation. Studies document chronic inflammation, abnormal immune activation, altered T- and B-cell signaling, and the presence of autoantibodies. This immune dysregulation can create a state of vulnerability in the body, which can increase…

If your allergies exploded after COVID, it’s not in your head. When the immune system gets hit with a major viral stressor, it doesn’t always return to baseline. In some bodies, the spike protein can shift the immune environment in…