I cringe when I see Griffin, my 8-year-old son, eat a piece of birthday cake with electric blue frosting. it’s not because of the load of sugar and buttercream he’s about to eat—it’s the off-the-charts hyperactivity that I know comes after he eats a certain blue dye. And when I took a quick Instagram poll, I found I’m not the only parent who swears that certain food additives—particularly artificial colors—trigger hyperactivity in their kids. It’s rare that we’re able to
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