A short clinician-hosted YouTube segment by Aaron Hartman, MD advocating for vitamin D as a nutrient associated with lower risks of cancer, autoimmune disease, and respiratory infections. The speaker explains vitamin D’s role in antibody production, describing the TH1 (cell-mediated) to TH2 (antibody-mediated) ‘handoff’ and noting that low vitamin D may delay antibody production—potentially worsening outcomes during infections, especially in winter.
Chapters
What one nutrient or supplement has been associated with lowering risk of cancer, lowering risk of autoimmune issues as well. In the wintertime, if you have elevated levels of this in the good range, you're less likely to get a cold or flu or even pneumonia when you're exposed. This nutrient called vitamin D, actually, it's super important for your body making antibodies when you're exposed to an infection. So there's two parts of the immune system, your TH1 and TH2. TH1 is when you get exposed to, like, cancers or viruses, and it's your immediate cell body response. If it's a new infection you've never been exposed to before, it can take anywhere from 7 to 10 days for your body to start making antibodies. I think most of us know what antibodies are these days. That's a process of handoff from this Th1 or cell mediated to a Th2 or antibody mediated part of your immune system. Vitamin D is critical for that handoff to occur. And if your vitamin D levels are low, the handoff can take longer. Just think about it. If it took two weeks to make antibodies versus 10 days versus 7 days versus 5 days, that could be a difference between getting a cold and getting better quicker, or actually having to go to the hospital. This is where vitamin D comes into play.