Is msg bad for you

MSG can make some people sick. For me I've always gotten much worse symptoms than feeling sick. If I accidentally consume something with even tiny amounts of free glutamate(active part of MSG) I become almost completely mentally incapacitated for days. My memory will be terrible. I'll be surprised I have a cat, for example. This is not just a little temporary brain fog; it is causing some permanent damage to my brain as well. It's a matter of sensitivity which can be caused by several factors such as low blood sugar, magnesium deficiency and a damaged blood brain barrier. The safe amount is different for everyone and it's not even known what the unsafe threshold is for anyone because damage of a smaller degree may not cause noticeable symptoms immediately but after several years of consumption have an accumulative effect that could cause decreased mental and memory capacity later.