Keto weight-loss diets are showing up everywhere these days. A recent example is the new SlimFast keto diet, which involves drinking low-carb meal replacement shakes (along with a few snacks) to dramatically cut your calorie intake.
A new line of SlimFast keto drinks, candies, and bars claims to support a healthy keto diet… but a glance at the ingredients list on these products tells a different story.
The SlimFast version of the keto diet is easy to understand and saves on meal prep time, which is great — but there are a few reasons to be cautious about SlimFast’s new keto products.
Keep reading to learn about SlimFast dieting, and why SlimFast’s new keto products and meal plan may not be the right move for a healthy keto diet.
What Is the SlimFast Keto Diet?
The rules of the SlimFast plan are simple. Each day you have two SlimFast meal replacement shakes from a shake mix, three 100-calorie snacks, and one 500 calorie meal. The 500 calorie meal is optional.
Each meal replacement smoothie contains about 180 calories. Add that to the snacks and the small meal and you’re at 1200-1300 calories per day. For men, the plan recommends adding another couple of optional snacks, for up to 1600 calories a day.
What’s in SlimFast Keto Products?
The meal replacement shakes contain fat, protein, and carbohydrates (macronutrient ratios depend on the flavor of shake). Some SlimFast products (the SlimFast Advanced Nutrition line) are advertised as low-carb, with 1-2 grams carbohydrate per shake, while others have over 20 grams per serving.
The shakes are fortified with vitamins and minerals like vitamin D, calcium, and magnesium. Other ingredients, like trans fats, are less desirable. More on this later.
The shakes come in flavors like milk chocolate and vanilla cream. Other SlimFast keto products include bars and snacks in flavors like double chocolate, triple chocolate, vanilla cake batter, peanut butter chocolate, and more.
You can find SlimFast keto shakes and bars at major retailers like Walmart and Amazon.
Will The SlimFast Keto Plan Help You Lose Weight?
If you can stick to the SlimFast keto diet plan long-term, you may lose weight. Going on the SlimFast diet means restricting calories, sometimes to under 1000 calories per day for women and under 1200 calories a day for men. It’s also likely that you’ll get into a ketogenic state.
Calorie restriction does work for weight loss[*] — if you eat less, you’ll lose weight — and there have been a few studies specifically on SlimFast dieting that had promising results.