Ruth D. Sattler, a nutritionist and gourmand, lays it all down into the 10 keys to unlocking your best metabolism in The Perfect Metabolism Plan. Ruth used to be a finicky eater who didn't like for vegetables and ate much too much sweets. She paid the price with a slew of chronic ailments, including mood swings, ravenous eating, digestive problems, allergies, and weight gain. It wasn't until years later that she realised the solution had been there in front of her all along. Right at the end of her fork, she found the answer!