Pineapple is a delightful fruit to eat and makes a great cake filling or drink on a nice hot day. But, pineapples are also rich in dietary fiber, iron, calcium, potassium and Vitamins A, B1, B2, B3, B6 and C. Pineapples relieves constipation and irregularity, contributes to a glowing complexion, promotes healthy bones and ensures oral health. It also works on nausea, chest congestion and overall body growth.