MSG (monosodium glutamate) is a food additive that has been blamed for a wide variety of ailments, including headache, nausea, diarrhea, dizziness, and tightness of the chest. However, there is no evidence that it negatively affects a pregnant woman or her fetus. That said, it's probably best to avoid eating foods that contain a lot of MSG because it is high in sodium, which can cause water retention and aggravate high blood pressure.
Originally published in You & Your Baby: Pregnancy.
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