If you are adolescent, pregnant, breastfeeding, have a medical condition, or want to lose more than 20% of your weight - then talk about your weight loss plans with your doctor. Disregards portion control: If you reach your goal weight on the SlimFast diet, you're going to have to eventually wean yourself off the program and maintain your weight loss. Because the diet products are already portion-controlled, you may not have the skills you need to make it through this transition without weight regain. Limits healthy cooking: You may not learn healthy cooking methods on the SlimFast diet plan—and cooking is not required on the program. And since you can consume a hearty 500 to 800 calories at your main meal, eating out or buying ready-to-eat processed food could be tempting.

This is reflected in earlier 2018 research, in which the authors concluded that the best diets for people with obesity and overweight involve realistic goals and account for each person’s preferences, needs, and medical conditions. Traditional methods of weight loss, such as restricting calorie intake or intermittent fasting, may also be effective in the short term. No foods are off-limits, as long as the meal falls within the total recommended number of calories. Depending on a person’s preference, this meal may be keto, low carb, or vegetarian, for example. U.S. Department of Health and Human Services and U.S. Department of Agriculture. 2020–2025 Dietary Guidelines for Americans, ninth edition.i/ii Data obtained from In Vitro testing on dietary fats and sugars Medical Device for supplementary treatment and prevention of excess weight and obesity. Certified Medical Device with safety and efficacy assessed under Medical Device Directive 93/42/EEC An older 2006 study that compared SlimFast with the Atkins diet, the Weight Watchers Pure Points program, and the “Eat Yourself Slim” plan found that all participants reported significant — and comparable — losses in weight and body fat over 6 months, compared with the control group. All the participants had overweight or obesity at the beginning of the study.

Below, we explore some risks and potential benefits of the SlimFast plan in more detail. Possible benefits Clinical Study References: Glucomannan : double blind placebo controlled clinical study on 20 obese subjects (IMC>30) during 8 weeks, Walsh DE et al. Int. Journal of obesity, 1984; 8(4): 289-93; Chitosan: single blind placebo controlled clinical study on 92 overweight and obese subjects (25

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Easy-to-follow instructions: No foods are off-limits for the sensible meal, and the products are portion-controlled, which makes it easy to follow. The SlimFast diet involves restricting calories, which is one of the most important factors in weight loss, according to a 2021 research review of different weight loss methods.

Huerta, S., et al. (2004). Feasibility of a partial meal replacement plan for weight loss in low-income patients. A person may benefit most from working with a personal trainer and registered dietitian, who can help tailor a weight loss plan to suit their lifestyle and medical needs.Glanbia Performance Nutrition (UK Sales Division) Ltd One Victoria Square, Birmingham, England, B1 1BD A person can buy their shakes as mixes or ready-to-drink products. Among the many flavors are strawberry, chocolate, vanilla, and cappuccino.

Heymsfield, S. B., et al. (2003). Weight management using a meal replacement strategy: Meta and pooling analysis from six studies. While no foods are off-limits, opting for the following can make it easier to stay within the calorie allowance: A smaller 2004 study of 63 people with obesity found that following the SlimFast plan for 6 months led to an average 7% body weight loss.Body Mass Index (BMI) is a calculation that uses your height and weight to determine a number that represents your risk for obesity-related health conditions such as heart disease, hypertension and diabetes. The higher your BMI is over 25, the greater the risk of developing these conditions.** Current research into the SlimFast plan is extremely limited, but older studies indicate that it can promote weight loss. However, other weight loss programs may be just as effective. Gramza-Michałowska A. The effects of ultra-processed food consumption-is there any action needed?. Nutrients. 2020;12(9). doi:10.3390/nu12092556 Costs less than other plans: Other diet plans like Jenny Craig, Nutrisystem, and Weight Watchers require you to commit to a long-term program to get a lower price. But SlimFast does not require a commitment. You can try it for a day or a month without having to cancel a subscription meal service or plan.