Apples are high in fibre, vitamins and minerals, low in calories, have only a trace of sodium, and no fat or cholesterol. They are high in polyphenols, which function as antioxidants and help neutralize free radicals. Oranges – A highly nutritious citrus fruit is particularly known for its Vitamin C content. Oranges are a healthy source of fibre, vitamin C, thiamine, folate, and antioxidants. It helps to boosts your immune system, protects your cell from damage. Oranges contribute to strong & clear skin.