041: Matt stone and the “overdeification” of vitamin A.

Masterjohn Q&A Files Episode 41


Question: I just saw an email from Matt Stone referring to the overly deified nutrient vitamin A. Also, a few Weston A. Price Foundation bloggers are starting to spread the word about being sick on a high vitamin A diet. Any thoughts about this and comments about Vitamin A being toxic?

You shouldn't deify any nutrient, right? Any point of view that breaks down the world into good and bad molecules, is a doomed-to-failure point of view because molecules don't have virtues. 

Everything is about context. Too much vitamin A cannot be defined outside of context. Not just what your needs are, not just what your genetics are, not just what your turnover rate is, not just whether you are getting pregnant, but also the presence of other things in the diet. For example, vitamins D, E, and K, which will affect the vitamin A requirement because they all regulate each other's breakdown.

Some people have too much Vitamin A. Some people take more vitamin A than they should. There's dozens of case reports of vitamin A toxicity, but there's no evidence that people at normal intakes who are not supplementing are getting inflammation from consuming dietary levels of vitamin A.

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