system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: What is MSG and how does it affect my body?
gpt
MSG is monosodium glutamate. Sodium is just the ion carrier for glutamate. It is common in many food items such as mushrooms, tomatoes, broccoli, walnuts, and peas. It has no negative effects on your body unless you're an (extremely rare) allergy sufferer (edit, for clarity: no known negative effects. All scientific investigations have shown no ill effects, but it's possible there's something out there with a small incidence that was not detected yet).