Collagen is a part of skin and its main function is to keep the skin young and healthy. Collagen production decreases with increasing age. It leads to many types of skin problems like wrinkles and thinning of skin. The natural collagen present in our skin is destroyed by pollution and sun exposure. Some people solve their beauty problems by using cosmetics and products that contain collagen. A diet consisting of collagen friendly foods can help you in improving the condition of the skin. We will discuss about such foods here. Dark leafy vegetables, carrot and fish are some foods included in our list. Following are the top 11 collagen boosting foods.