SlimFast Leak Proof Shaker Bottle with Storage Compartment, 500 ml

Product Information

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. No long-term maintenance plan: Once you reach your goal weight, you are advised to slowly decrease your consumption of SlimFast and increase your intake of regular foods. But beyond that, no structured plan helps to transition you off the diet. One downside of meal replacement plans is that maintaining weight loss can be difficult over long periods. A 2021 study suggests that weight loss through calorie restriction can improve insulin sensitivity, which reduces the risk of developing type 2 diabetes.

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. Contains processed foods: The program is built primarily on processed foods. Most health experts recommend decreasing the amount of processed food you consume and increasing your intake of fresh or frozen fruits and vegetables, lean meats, seafood, and whole grains for optimal health. Studies continue to show a link between processed foods and chronic diseases, which is why consuming these products for the long term is not recommended. Koliaki, C., et al. (2018). Defining the optimal dietary approach for safe, effective and sustainable weight loss in overweight and obese adults.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. Restricting calories while making other recommended lifestyle changes may also improve heart health and prevent cardiovascular events in people with overweight or obesity.

Hall KD, Ayuketah A, Brychta R, et al. Ultra-processed diets cause excess calorie intake and weight gain: An inpatient randomized controlled trial of ad libitum food intake. Cell Metab. 2019;30(1):67-77. doi:10.1016/j.cmet.2019.05.008 Lowe MR, Butryn ML, Thomas JG, Coletta M. Meal replacements, reduced energy density eating, and weight loss maintenance in primary care patients: a randomized controlled trial. Obesity (Silver Spring). 2014;22(1):94-100. doi:10.1002/oby.20582

Check store stock

However, they concluded that while meal replacement diet plans are convenient, they do not work for maintaining weight loss over a long period of time. For the one daily meal, SlimFast recommends allocating half of the plate for vegetables, a quarter of the plate for lean protein, and a quarter of the plate for starches. One 2018 study found that meal replacement shakes can be a safe, effective way for people with obesity and type 2 diabetes to lose weight and improve their glucose, insulin, and lipid levels.

The advocacy group Clean Label Project ran a study published in 2022 that tested 130 popular protein powders. It found that the products tested positive for a wide range of harmful substances, including: Morgan, L. M., et al. (2009). Comparison of the effects of four commercially available weight-loss programmes on lipid-based cardiovascular risk factors [Abstract]. Guo, X., et al.(2018). Effects of a meal replacement on body composition and metabolic parameters among subjects with overweight or obesity. 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. Some are designed for ketogenic or diabetes-friendly diets. For example, the keto options include trail mixes, Cheddar Cheese Crisps, and bars.

Log in/register

It is important to note that these studies typically involve participants with overweight or obesity. Therefore, it is difficult to know how effective the SlimFast plan might be for people with more moderate weights.