Eating carefully may help if you are gluten intolerant or have other food intolerances. (example=nightshade veggies).

Reducing sugar and carbs helps some who have diabetic inclinations or frank diabetes.

If you are using a drug (like statins), and continue to do so --that causes PN, the PN will continue and progress. Other toxins include solvents, pesticides, fungicides (often at golf courses),
chemotherapy for cancer, formaldehyde, alcohol, smoking, vaccines, autoimmune disease, etc.

Genetic PN still has no effective treatment, so pain management is about all you can expect from that. It is best to avoid certain drugs however, as they are thought to be triggers.

Certain nutrient deficiencies come with gluten intolerance due to poor absorption. Other deficiencies may be genetically based or result from odd dietary habits.

So some things you may be able to help yourself with and others, less so.