A smoothie (occasionally spelled smoothee or smoothy) is a thick beverage made from blended raw fruit or vegetables with other ingredients such as water, ice, dairy products or sweeteners.
In addition to blended fruit/vegetables, smoothies may include other ingredients such as water, crushed ice, fruit juice, sweeteners (e.g. honey, sugar, syrup), dairy products (e.g. milk, yogurt, low fat or cottage cheese, whey powder), plant milk, nuts, nut butter, seeds, tea, chocolate, herbal supplements, or nutritional supplements.
A smoothie containing dairy products is similar to a vegetable milkshake, though the latter typically contains less fruit and often contains ice cream.
The health of a smoothie depends on its ingredients. Many smoothies include large servings of fruits and vegetables which are recommended in a healthful diet. However, too many sweet fruits can lead to too much sugar. Similarly, ingredients such as protein powders, sweeteners, or ice cream are often used in smoothie recipes, but are not necessarily healthful.
Smoothies include dietary fiber (e.g. pulp, often also skin and seeds) and so are thicker than fruit juice, with a consistency similar to a milkshake. The fiber makes smoothies more healthful than fruit juice alone. Smoothies—particularly green smoothies (which include vegetables)—are often marketed to health-conscious people, for example as a healthier alternative to milkshakes.
Some commercial smoothies, however, have added sugar, which can more than double their carbohydrate content. The fact that smoothies can be quickly swallowed without chewing makes them less effective in providing a lasting hunger-inhibiting effect than eating the raw fruit/vegetables they contain.