Getting yourself a parasitic buddy will help you lose weight; the idea here is that the tapeworm lives in your intestines and eats whatever you’re eating, meaning you can go for seconds or thirds without feeling guilty about any of the calories. Doesn’t sound so bad, right? Until the tapeworm part, that is. Tapeworms shouldn’t be inside your body unless it’s by accident, but if you lived in Victorian England, you might have intentionally swallowed one for weight loss.