That MSG isn’t the poison we’ve made it out to be has been well-established. News stories are written regularly about the lack of evidence tying MSG to negative health effects. (Read here and here, for example. Or here, here, here, here and here.) Still, Yelp reviews of Chinese restaurants tell tales of racing hearts, sleepless nights and tingling limbs from dishes “laden with MSG.” Even when the science is clear, it takes a lot to overwrite a stigma, especially when that stigma is about more than just food.