Dragon fruit contains small amounts of several nutrients. It’s also a decent source of iron, magnesium, and Fiber.
Here are the nutrition facts for a serving of 3.5 ounces, or 100 grams ):
Protein: 1.2 grams
Fat: 0 grams
Carbs: 13 grams
Fiber: 3 grams
Vitamin C: 3% of the RDI
Iron: 4% of the RDI
Magnesium: 10% of the RDI
While 2,000 - 3,000 daily milligrams of vitamin C can effectively protect the immune system, the intake of just 500 milligrams of vitamin C also increases the body's production and blood levels of glutathione, an antioxidant that detoxifies bacterial waste products and has some beneficial influence on the immune system.
Additionally, dragon fruit provides small quantities of minerals, mainly iron, phosphorus and calcium, as wells as vitamins B2 (rivoflavin) and B3 (niacin).
Given the high amount of fiber and magnesium, as well as the extremely low calorie content, dragon fruit can be considered a highly Nutrient Dense fruit.