A smoothie can be your best friend or worst enemy, depending on what you put in the blender.
Mixtures whipped with sweeteners, sweet-flavored yogurt, or even excessive amounts of fruit could have a sugar content close to that of a bowl of ice cream. That too-sweet situation could cause disease-causing inflammation in the body and depress your immune system—not exactly healthy. (For healthy smoothie recipes, see the only 4 smoothie recipes you'll ever need.)
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On the flip-side, the...