MSG causes neurological problems (especially in people low in B vitamins and prone to migraines) because it stimulates the pleasure center of the brain like a narcotic. It kills some brain cells while it's at it, too. It was initially used in the U.S. during WWI when preserved foods were unpalatable and then grandfathered into approval by the FDA. MSG is not food and is extremely unhealthy, yet it is used in restaurants, frozen dinners, soups, seasoning mixes, ranch dressing, and flavored chips with abandon. I cook just to avoid such toxins (and the seizures they cause me).