Here is an analysis of the content of some average Himalayan salt. With a few specific exceptions, most elements contained are well below 1ppm (read: way too scarce to matter). What it does have in any meaningful quantity are all things that you should already be getting plenty of in an otherwise healthy diet (and if you aren't, a little pink salt certainly won't fix that!). Your body regulates its own pH very well, and Himalayan salt isn't going to change that one way or another. If you are concerned about your diet impacting the health of your nervous system, make sure you eat plenty of green vegetables, grains, seeds, legumes, etc... and definitely make sure you have some high quality fat sources in your diet (avocado, fish, eggs, those aforementioned seeds, etc). A wide variety of decent quality foodstuffs and regular physical & mental exercise are where its at. Don't get hung up on specific 'miracle foods' and trendy diets; they really aren't useful or necessary.