Nutritional Facts for Granny Smith

Granny Smith apples are a variety of fruit known for their distinct green color and tart taste. They are typically used for baking, but you can eat them as a snack as well. Granny Smith apples are a good choice for dieters, as they are low in calories and fat, so you can fit them into a variety of diet plans.

Granny Smith apples have a bright green color. (Image: Geribody/iStock/Getty Images)

Calories

Granny Smith apples are low in calories. A 100 gram Granny Smith apple contains 52 calories, an amount comprising less than 3 percent of the total daily suggested intake of 2,000 calories. If you're dieting, you could burn the calories in a Granny Smith apple relatively quickly. For instance, a five-minute run or six minutes of swimming laps would burn about 52 calories.

Carbohydrates

As with other types of fruit, Granny Smith apples are rich in carbohydrates. A 100 gram Granny Smith apple contains 14 grams of carbohydrates, which is less than some other fruits provide; a 100 gram banana contains 23 grams of carbohydrates. This nutrient is your body's primary source of energy, so if you have a lot of activity planned, eating a food higher in carbohydrates than Granny Smith apples may be beneficial.

Fiber

While Granny Smith apples are rich in carbohydrates, they are not a good source of fiber, as each 100 gram apple contains only 2 grams of fiber. Dietary fiber is vital for overall health, as it is involved in keeping your blood sugar levels stable, promoting satiety and ensuring the health of your digestive system.

Sugar

Most of the carbohydrates -- 10 grams -- in Granny Smith apples come from sugar. While sugar does provide energy just like other carbohydrates, the energy tends to be short-lived. Sugar can also encourage tooth decay, so high-sugar diets aren't optimal.

Potassium

Granny Smith apples are not particularly rich in potassium, but they do provide some. Each 100 gram apple contains 107 milligrams of this nutrient, which constitutes about 5 percent of the daily suggested intake of potassium. Potassium is an electrolyte, which means it facilitates the transfer of electrical impulses, such as nerve messages, through your body.

Vitamins and Minerals

Granny Smith apples provide low levels of some vitamins and minerals. A 100 gram apple contains 8 percent of the daily suggested intake of vitamin C and 1 percent of the daily suggested intake of calcium, iron and vitamin A.

Protein and Fat

Granny Smith apples are devoid of protein and fat, both of which are vital nutrients for your overall health. Protein helps build and repair your body's tissues, while fat provides energy, promotes satiety and encourages vitamin absorption.

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