When Slim Fast first came out about nearly 30 years ago, my mom used it to lose all her excess weight (about 3 stone). I admire her self discipline. She never cheated on the plan, worked out daily to the same old aerobics video (Jane Fonda!), and slowly but surely looked incredible. She must have stayed on Slim Fast for about two years to maintain. Today, at 60 years old, she has still maintained her original weight loss. I would give absolutely anything to have her willpower- didn't get that from her.