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. While no foods are off-limits, opting for the following can make it easier to stay within the calorie allowance: Medical News Today has strict sourcing guidelines and draws only from peer-reviewed studies, academic research institutions, and medical journals and associations. We avoid using tertiary references. We link primary sources — including studies, scientific references, and statistics — within each article and also list them in the resources section at the bottom of our articles. You can learn more about how we ensure our content is accurate and current by reading our editorial policy. 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

With SlimFast, a person reduces their calories by replacing meals. The authors of this study write that meal replacements can be useful for people who find it difficult to estimate the calorie content of their food. 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. In addition, some research indicates that the SlimFast plan leads to cholesterol changes that may reduce the risk of cardiovascular disease. Risks and disadvantages Products are accessible: SlimFast products are available at many supermarkets, grocery stores, and pharmacies around the United States. They are also available online.Huerta, S., et al. (2004). Feasibility of a partial meal replacement plan for weight loss in low-income patients.

Traditional methods of weight loss, such as restricting calorie intake or intermittent fasting, may also be effective in the short term.DIY shakes: A person can make these at home with protein powders, yogurts, seeds, nuts, fruits, vegetables, and other ingredients. Substituting two main daily meals of an energy-restricted diet with meal replacements contributes to weight loss. Substituting one of the main daily meals of an energy-restricted diet with a meal replacement contributes to the maintenance of weight after weight loss.