A liquid diet is a very low-calorie diet plan, according to the National Institute of Diabetes and Digestive and Kidney Disorders Weight-control Information Network. It produces a rapid weight loss of 3 to 5 pounds a week, providing motivation and improving obesity-related complications quickly. Liquid diets are only recommended if you have a BMI of 30 or greater and should only be followed under the guidance of a physician.
Optifast
Optifast is a comprehensive medical program. It offers a complete medical evaluation and ongoing professional weight loss counseling from medical doctors and registered dietitians. Average weight loss for people following the program is 52 pounds in 22 weeks, according to the Optifast website. The diet offers ready-to-drink shakes, shake mixes and soup mixes. In addition to offering assistance with diet, Optifast also offers lifestyle education to help make your weight loss a long-term success. In addition to one-on-one counseling, Optifast also offers group counseling and peer support.
Medifast
The Medifast plan is a low-calorie liquid diet but offering more than shakes, according to the website. While on the Medifast program, you eat five Medifast meals and one at-home meal consisting of a lean protein and vegetables. Each Medifast meal is individually portioned, calorie and carbohydrate controlled and low in fat, according to the Medifast quick start guide. Most people who follow the Medifast program lose 2 to 5 pounds a week. Once you have reached your weight goal, Medifast offers a transitional program to slowly reintroduce real food and additional calories. The transitional program is designed to help prevent you from re-gaining your lost weight. After the eight to 12 week transitional plan, you than go on the maintenance plan consisting of a calorie-controlled, low-fat diet.
Slim Fast
The Slim Fast plan is a readily available liquid diet program. On the Slim Fast plan, you replace two meals with a Slim Fast shake and eat one 500-calorie balanced meal. In addition to the meals, Slim Fast suggests you eat three snacks a day consisting of about 100 calories, according to the website. Slim Fast promises weight loss, but recommends a slow, steady weight loss of no more than two pounds a week. While following the program, Slim Fast offers online peer support to keep you motivated and group chat sessions run by a registered dietitian.
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