WASHINGTON - Long COVID remains one of the more stubborn medical puzzles of the past several years. Millions of people who ...

Vitamin D supplements may offer researchers a new clue about lingering COVID symptoms that persist after infection, according to a new study. Researchers at Mass General Brigham examined whether high ...

Vitamin D supplements may offer researchers a new clue about lingering COVID symptoms that persist after infection, according to a new study. Researchers at Mass General Brigham examined whether high ...

Low vitamin D levels might increase the odds of severe COVID People with low blood levels of vitamin D deficient were 36% more likely to be hospitalized with COVID However, vitamin D levels were not ...

The death rate for COVID-19 in vaccinated older adults with low vitamin D was similar to unvaccinated older adults, but people with lower levels have a higher risk compared with people who had higher ...