This must be the most disgusting diet ever thought of, and there is evidence that “tapeworm diet pills” were marketed from 1900 – 1920’s. Basically, you ingest beef tapeworm eggs (beef tapeworm is supposedly the best choice), and then you take medicine to kill the tapeworm after you’ve lost the desired amount of weight. It doesn’t take a genius to know this diet is both ineffective and unhealthy. You’re not changing your eating habits with this “diet,” so all the weight will come back once the worm is gone, and it’s extremely unhealthy to have a parasite living in your body sucking all of the nutrition out you.