Why Does Taco Bell Give Me Diarrhea? The Expert Spill. Let’s cut to the chase: the unpleasant after-effects some experience after indulging in Taco Bell are usually due to a perfect storm of high fat content, excessive spices, potential food sensitivities, and, let’s be honest, sometimes just plain overeating. The combination can overwhelm your digestive ... Read more The post Why does Taco Bell give me diarrhea? appeared first on GB Times.