SCD for the *d*. Are you familiar with it? Meat, veggies, fruit... no starch (no potato, sweet potato, beans, grain, etc.)
Zinc has stopped my son's 'twitchy eye'. That's the second twitch it's stopped. He had a 'breathe twitch a couple of years ago that was resolved by zinc. I quit supplementing it a few months ago and noticed he came up with an eye twitch a month ago or so. I started up his zinc again and he has lost the eye twitch. I can't explain it though.