A few other interesting links with Vitamin D absorption. Surprised nobody has brought up gut dysbiosis and the role microbiome plays in Vitamin absorption. I'm finding it increasingly difficult to discern whether the things we consume are for the direct benefit of our cells and metabolic needs or via a more indirect path if the things we consume directly affect the microbiome within us which then translates into either nourishment or inflammation within us. Since microbiomes can change rapidly in composition, this feels like a game of nurturing over the long-haul with some minor blips along the way.

[1] "connection between vitamin D and the immune system through gut bacteria and may have applications for improving cancer therapies"

[2] "How the Gut Microbiome Affects Vitamin D Absorption"

[3] "vitamin D may affect the host-microbiota relationship."

[1]: https://www.science.org/doi/10.1126/science.adh7954

[2]: https://www.gutnow.com/medical-treatments/how-your-gut-micro...

[3]: https://journals.asm.org/doi/10.1128/spectrum.00083-24