A smoothie is a refreshing, nutrient-rich drink typically made from a blend of fruits and vegetables. Recently, the "21-Day Smoothie Diet" has gained popularity as a weight-loss method. But how is this diet followed, and what potential health effects does it have? Here’s a closer look.
What Is the Smoothie Diet?
The "21-Day Smoothie Diet," developed by health consultant Drew Sgoutas, is outlined in his digital book The Smoothie Diet, which includes smoothie recipes and sample meal plans. In this diet, two main meals are replaced with smoothies each day for 21 days.
The idea behind the smoothie diet is to create a calorie deficit by consuming fewer calories than you burn daily. The diet’s smoothies are made from high-fiber fruits and vegetables, which help reset taste preferences, potentially reducing sugar cravings.
According to Sgoutas, this method offers several health benefits, such as:
- Encouraging healthier eating habits
- Boosting the immune system
- Enhancing skin and digestive health
- Raising energy levels
- Supporting weight loss
While designed as a 21-day plan, the diet can be repeated to reach one’s desired weight. Some users have reported losing up to 4 kilograms (about 9 pounds) within just three days.
How to Follow the Smoothie Diet
This diet involves substituting two daily meals with smoothies based on recipes provided in The Smoothie Diet e-book. Here are the main guidelines:
- Replace two main meals with smoothies daily.
- Have one balanced meal each day that includes whole, unprocessed foods.
- Snack on low-sugar, high-fiber foods, each portion containing 150-200 calories.
- On "cheat days," you may skip smoothies, but any full meal should still consist of minimally processed whole foods.
Recommended Foods
- Fruits: Bananas, apples, oranges, pineapples, strawberries, pears
- Vegetables: Spinach, kale, cauliflower, carrots, broccoli
- Proteins: Chicken, turkey, salmon, eggs, nuts
- Whole grains: Brown rice, quinoa, oats
- Nuts and seeds: Flaxseed, chia seeds, almonds, walnuts, peanut butter
Foods to Avoid
- Processed meats: Bacon, ham, pepperoni, cold cuts, salami
- Refined grains: White rice, white pasta, white bread, tortillas
- Fried foods
- Processed foods: Instant meals, cakes, chips
- Sugary drinks: Soda, sweetened teas, sports and energy drinks
Health Risks of the Smoothie Diet
Though popular, the smoothie diet is considered restrictive and may be hard to maintain long-term. Some potential risks include:
Nutritional Deficiencies
Replacing full meals with smoothies may lead to deficiencies in certain nutrients. While the diet aims for about 1,500 calories a day, many smoothie recipes are very low-calorie and might not meet typical adult calorie requirements.
High Sugar Levels
Some ingredients in smoothie recipes, such as honey, granola, and certain fruits, can raise sugar intake. This can be problematic for people with diabetes.
Limited Scientific Evidence
One major downside of this diet is the lack of research supporting its health claims. While smoothies can complement a balanced diet, there’s no strong evidence showing that replacing entire meals with smoothies improves skin, gut health, or immunity.
While the smoothie diet may seem like a healthy and refreshing weight-loss approach, there’s limited scientific support for its effectiveness. For anyone considering a diet plan, consulting a dietitian or nutritionist is advisable. Alternatively, you can use the Ai Care consultation service available for download on the App Store and Play Store.
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- dr Hanifa Rahma
Ajmera, R. (2022). What Is the 21-Day Smoothie Diet, and Should You Try It?. Available from: https://www.healthline.com/nutrition/smoothie-diet
Team Verywell Fit. (2024). Smoothie Diet: Is It Good for Weight Loss?. Available from: https://www.verywellfit.com/weight-loss-smoothie-dos-and-donts-3495929
Cameron, K. (2023). Smoothies: Are They Good for You?. Available from: https://www.webmd.com/diet/smoothies-good-for-you
Hill, A. (2020). Are Smoothies Good for You?. Available from: https://www.healthline.com/nutrition/are-smoothies-good-for-you