A Whole-Food, Plant-Based Diet Is Not a Diet of Vegetables. You may have heard that people living this way eat lots of spinach, kale, and collard greens, and that this is, in fact, the primary basis for many of the meals. You may even think we live only on leafy and raw vegetables.
Subsequent experiments have helped dismantle the MSG-is-bad-for-you theory. For instance, in one study from 1993, researchers tested 71 subjects for reactions to MSG in relation to CRS, concluding that ârigorous and realistic scientific evidence linking the syndrome to MSG could not be found.â.
Excess glutamate such as that found in MSG has been shown to increase the growth and spread of cancer once you do have it though.   I would be more concerned about MSG damaging and killing off my brain cells.