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Limes: A Citrus Fruit with Powerful Benefits

Limes are sour, round, and bright green citrus fruits.

They’re nutritional powerhouses — high in vitamin C, antioxidants, and other nutrients.

There are many species of limes like the Key lime (Citrus aurantifolia), Persian lime (Citrus latifolia), desert lime (Citrus glauca) and kaffir lime (Citrus hystrix).

Each of these species has unique characteristics. For instance, the Key lime is smaller, more acidic, and more aromatic than the more common Persian type.

In the United States, Persian limes are the most commonly available type.

Because limes are loaded with nutrients, they may help boost your immunity, reduce heart disease risk factors, prevent kidney stones, aid iron absorption, and promote healthy skin.

This article provides an overview of the nutritional benefits of limes, as well as their uses and potential side effects.

Lime nutrition facts

Though small, limes are loaded with nutrients — particularly vitamin C.

One whole, medium lime (67 grams) provides:

  • Calories: 20
  • Carbs: 7 grams
  • Protein: 0.5 grams
  • Fat: 0.1 grams
  • Fiber: 1.9 grams
  • Vitamin C: 22% of the Reference Daily Intake (RDI)
  • Iron: 2% of the RDI
  • Calcium: 2%% of the RDI
  • Vitamin B6: 2% of the RDI
  • Thiamine: 2% of the RDI
  • Potassium: 1% of the RDI

Limes also contain small amounts of riboflavin, niacin, folate, phosphorus, and magnesium.