I certainly can empathize with numbness. My feet have been giving me problems for years.

Omega 3 fatty acids can help with nerve damage. The brain and nerves are made of large quantities of fat. (It's actually a compliment when someone calls one a fat head. It means your brain is what it should be.) I've heard that about half the fat in the brain is Omega 3, and about half, Omega 6. The problem with Omega 3 is that many people in modern societies consume about 15 times as much Omega 6 as Omega 3.

And avoid partially-hydrogenated oils like the plague. It ought to be illegal to sell them, since they are essentially poison. Unfortunately, they are so pervasive in modern society that it is really hard to avoid them.

Also, activity is essential. Don't stop moving about because your body is hurting.