Dr. Oz speaks about parasitic worms: tapeworms, roundworms and pinworms. If a worm gets into your gut, it will make your intestine its new home and live off of what you eat. A tape worm is one, extremely long worm (over 30 feet!!); whereas round worms and pin worms infect in packs.
Mike Leahy, a guest on Dr. Oz, intentionally consumed a tapeworm in the name of science. He tracked how he felt and what side effects he noticed. He did not lose any weight, but he did see worms crawl out (not just when he went to the bathroom, but worms on his arms too). Some common symptoms of tapeworms include feeling like you have butterflies in your stomach, nausea, mild stomach cramps, or if you see something moving in your bowel movement (or as Leahy says “poop”). Leahy took magnesium salt to remove the tapeworm quickly.