While summer is technically over, there’s still plenty of time here in Virginia to soak in some sunshine. The changing season has Dr. Franssen thinking about Vitamin D — the Sunshine Vitamin! — and what it does to our immune system. BIOLOGYcalciumCoronavirusCOVID-19COVID19hormoneimmune systemIMMUNITYneuroscientistsciencescience museumscientistSunsunnySunshinesunshine vitaminthinkingthinking about thinkingvideoVITAMINvitamin CoronavirusVitamin DVITAMINSvlogYouTubeRelated Posts What Happens When the Immune System Learns to Tolerate COVID? January 6, 2026 What Happens When the Immune System Learns to Tolerate COVID? January 5, 2026 So much #research happening!#covid19 #doctor #themoreyouknow #immunity #virus #antibodytesting January 3, 2026 Immune System vs. Viruses: Can We Ever Win? #shorts December 23, 2025 Probiotics, Immunity & COVID – Why I Waited for the Research December 19, 2025 Did Covid Change Your Brain? Doctor Explains December 17, 2025
So much #research happening!#covid19 #doctor #themoreyouknow #immunity #virus #antibodytesting January 3, 2026