Strawberry banana smoothies make tasty snacks and relatively balanced meal replacement options. They're chock full of vitamins, minerals and nutrients if you make them yourself with healthy ingredients, and they can certainly help you lose weight as part of a low-calorie diet plan. However, despite all of those advantages, it's not healthy or effective to focus so heavily on just one food in an effort to lose weight.
Benefits
As meal replacements go, strawberry banana smoothies are among the most nutritious. Because they're rich in fresh fruit, they contain vitamins and minerals that have the potential to reduce risks of diabetes, cancer, stroke, heart attack, kidney stones and bone loss, according to ChooseMyPlate.gov. When you make them with low-fat milk or yogurt, the smoothies are also great sources of lean protein, a satiating nutrient that is especially important for weight loss. Protein-rich foods can fill you up effectively and keep you full for long periods of time, which is part of the reason why high-protein diets often work well for weight loss.
Risks
If you drink only strawberry banana smoothies, however, you'll be missing out on a host of other nutrients that are essential for your health. For example, complex carbohydrates that are primarily found in whole grains are conspicuously absent from smoothies, and vitamins and minerals present in green leafy vegetables are also absent. You may think you can make up the difference with a multivitamin, but that's not necessarily the case. If you follow an all-smoothie diet for longer than several days, you are at risk of developing nutrient deficiencies, fatigue, dizziness, dangerously rapid weight loss or other negative health issues.
Smoothie Recipe
For a healthy, homemade strawberry banana smoothie to serve one, you'll need 1/2 cup of plain nonfat yogurt, 1/2 cup of skim milk, one small frozen banana and one cup of fresh or frozen strawberries. Blend the ingredients with a handful of crushed ice in a blender or food processor until the shake is smooth.
Nutrition Facts
The smoothie recipe above makes a shake that has about 260 calories, 12.5 g protein, 2.5 g fat, 50 g carbohydrates, 6 g fiber and 35 g natural sugar. If you'd like to add extra protein, blend the ingredients with one 30-g scoop of whey or soy protein powder, which will add about 115 calories and more than 20 g protein. To bulk up the shake and use it as a meal replacement, throw in a tablespoon of wheat germ, unsweetened cocoa powder or nut butter, all of which will add fiber and protein. Almond butter will add about 90 calories, wheat germ about 30 and cocoa powder about 15.
Considerations
Talk with your doctor or a registered dietitian before going on a limited smoothie diet or using any type of meal replacement for weight loss. The National Institutes of Health recommends following a varied diet when you're trying to lose weight, including daily servings of vegetables, fruits, whole grains, lean proteins and low-fat dairy.
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