As the glutamate industry pumps out ever increasing amounts of excitotoxic free glutamate to be used in food, the incidence of glutamate-induced disease and disability has been growing.
Check it out. You’ll find the numbers in market reports and at the national library of medicine’s PubMed.gov.
And don’t be put off by the fact that there are other toxins in the environment that surely contribute. That doesn’t make glutamate’s harmful role any less a factor.