Question: “Any recommendations for peripheral neuropathy? Testing vitamin B, lion's mane?”
First of all, there is no such thing as vitamin B. I'm not trying to be a nitpick, but there's literally almost a dozen B vitamins, with different tests, that do different things. So, I think it's important to establish a habit of never saying vitamin B because, not to be a grammar nitpick, but I just think it's misleading to think about the concept of vitamin B.
There are quite a few B vitamin deficiencies that can cause peripheral neuropathy.
You can also cause peripheral neuropathy by taking vitamin B6 in too high doses, and that's one of the reasons why you have to separate them out because B6 is unique among the other B vitamins in that respect.
In Testing Nutritional Status: The Ultimate Cheat Sheet; I have an index of signs, and if we go into peripheral neuropathy, I have listed here deficiencies of thiamin, riboflavin, and vitamin E — toxicity of selenium and B6.
This Q&A can also be found as part of a much longer episode, here:https://chrismasterjohnphd.com/podcast/2019/02/09/ask-anything-nutrition-feb-1-2019/
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