Excitotoxins
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Monosodium glutamate belongs to a class of chemicals called excitotoxins. Excitotoxins are substances believed to cause brain damage and damage to the central nervous system.
Excitotoxins tend to affect the hypothalmus portion of the brain, which controls important bodily functions such as growth, sleep patterns, puberty and even appetite. Some studies suggest that MSG inhibits the normal function of the hypothalmus, which can cause long-term negative effects such as obesity, sleep disturbances and reproductive issues.