I have gluten intolerance and Hoshimoto's and Atrial Fibrillation. I found in a post about the truth of MSG that MSG is also a food ingredient that starts irregular heart beats. This is my experience within an hour of eating prepared foods. I found out that the glutamate competes in the body with cysteine. The body uses cysteine to make taurine, the body's heartbeat regulator, used as a neurotransmitter. A taurine deficiency state can be induced by MSG. Has anyone experienced this?