When a late-night craving strikes, nothing hits the spot like Taco Bell. The fast-food chain can offer up some healthy options if you need to keep your diet on track, and as long as you eat carefully, you don’t have to worry about avoiding this Tex-Mex favorite. But when you do plan to indulge, make sure to tread carefully, as some truly unpleasant side effects come alongside eating at Taco Bell.