Hi, Chrissy!
Welcome to NeuroTalk! I'm afraid I don't know anything about MP, but I do know about weight loss. My best suggestion is to stay away from all packaged foods, and stick with the four food groups as close to the way God made them as possible. And remember, if you can get it from your car window, it's not food!!
I lost and have maintained this way for almost 16 years. It's a lifestyle change, not a temporary fix.
Have you tried some of the gentler exercise programs such as "Sit and be Fit" on PBS?