Carnivore diet for vitamin D deficiency correction
The protocol is presented not as a standalone recommendation to all, but as a mechanistic demonstration of why carnivore consumers report dramatic improvements in vitamin D status and related symptoms. Berg dissects each barrier: cofactor deficiency (magnesium, K2, zinc, retinol, cholesterol), gut inflammation, insulin resistance, VDR resistance from infections, SIBO/candida, and bile insufficiency. He explains how a carnivore diet simultaneously addresses all these. For example, eliminating plants removes antinutrients, making minerals fully available; high‑fat/low‑carb nature drops insulin; ketones trigger autophagy; low‑carb starves Candida. The diet improves bile salt production, which kills SIBO microbes and helps absorb vitamin D. He cites anecdotal reports: autoimmune diseases clearing, depression gone, joint pain gone, better sun tolerance (tan easier, less burning). The vitamin D content of the diet is modest (500‑1500 IU), so the benefit is largely indirect.
Cofactor delivery: Meat provides highly bioavailable magnesium, zinc, and retinol; eggs/liver give retinol; butter and fatty meats supply cholesterol. These cofactors enable vitamin D to be activated and transported into cells. Receptor unblocking: Carnivore drastically lowers gut inflammation, reduces seed‑oil‑induced inflammation, improves insulin sensitivity, and bile flow, all of which up‑regulate vitamin D receptor expression and activity. Bile also aids absorption of fat‑soluble D. Autophagy induced by ketosis clears cellular debris and pathogens (like viruses that downregulate VDR). SIBO/Candida elimination: Removing dietary carbs starves Candida and reduces microbial overgrowth, which otherwise impairs D absorption.
In fact, if a person does have gut inflammation, they should do the carnivore diet for at least a couple months. Because with the carnivore diet, you're eliminating a lot of things that can irritate the gut. And also, you're taking in a lot of the amino acids that actually heal the gut lining. And you need a healthy gut to absorb vitamin D.

