0:50

In this brief monologue, Dr. Steven Gundry presents vitamin D as a potential "longevity drug," arguing that individuals with higher vitamin D levels tend to live longer and enjoy better healthspan. He links this effect to gut health, describing the gut lining as a large barrier separating the microbiome and ingested material from the rest of the body. Gundry emphasizes that the gut wall contains abundant stem cells, which are highly responsive to vitamin D. When vitamin D levels are low, these stem cells remain inactive despite damage to the gut barrier. Conversely, adequate vitamin D stimulates the stem cells to differentiate and repair holes in the gut lining, thereby supporting overall health and longevity.

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