LifeSign DietMate Handheld Weight, Cholesterol, and Hypertension Control Computer Editorial Review: DietMate is a convenient, hand-held computer that guides you through a proven program of weight loss, cholesterol reduction, and hypertension control. First, it helps personalize a plan that is just right for you. Then it gives you specific choices for each meal, tracks your progress and adjusts itself automatically. It even makes grocery shopping lists!