- Breadfruit is an excellent source of antioxidants, calcium, carotenoids, copper, dietary fiber, energy, iron, magnesium, niacin, omega 3, omega 6, phosphorus, potassium, protein, thiamine, vitamin A, and vitamin C. Breadfruit is high in nutrients that help to decrease cholesterol, fight infections, and maintain young skin and hair. It is a diabetic-friendly food because it includes a lot of fiber, which slows down glucose absorption.