This is Carol Selius. I had a high B 12, actually it's low B12 which I don't understand. Go to a naturopathic doctor. I was diagnosed with candida. I also have leaky gut syndrome. Have that doctor test you for leaky gut and candida. There's a test called OAT. It tests for 75 different things from fungus/candida to microcondria, etc... It's pricey, but worth it. Take high doses of B12/Folate and the the B's, etc... I took a food intolerance test from a different doctor. Food intolerances will have an effect on your nerves. It does mine. Eat high protein, low carb foods. Cut out the sugar, even the good sugars, except for organic stevia. Methylation, talk to your naturopathic doctor MTHFR (Methylation) is a big factor with periphial neuropathy. Eat very little fruit. High fruit sugar are bananas, mangoes, pineapples, etc.. I hope this helps.