WARNING SIGNS of Gut Parasites: 8 Symptoms You Shouldn’t Ignore Gut parasites (intestinal worms or protozoa) can quietly live in your digestive system and cause ongoing stomach issues. Many people keep treating it as “food poisoning” or “acidity,” but the symptoms keep coming back. If you notice these warning signs, it’s worth getting checked. What are gut parasites? Gut parasites are organisms that live inside the intestines and feed on nutrients from your body. Common examples include pinworms