Dr. Jen Ashton answers viewers’ questions about health, nutrition and COVID-19 vaccines. abcashtonCoronaviruscovidCOVID-19dr.GMAGREYHairhealthJennewsnutritionp_cmsid=2494279p_vid=news-78151904pandemicquestionssupplementsvaccinesVITAMINVitamin SupplementsVITAMINS