For vision and immunity: 5 foods rich in vitamin A. Vitamin A is an essential nutrient for cell growth, eye health, and normal immune function. A lack of this substance can lead to constant fatigue, skin problems, frequent colds (due to weakened immunity), severe dry eyes, and even night blindness. Vitamin A can be replenished with dietary supplements, but it is best to get it regularly from foods especially rich in this nutrient. Here are some of them. Beef liver Beef liver is a real record holder for vitamin A content: from just 100 grams of this product, 8367 micrograms of vitamin A can be obtained – this is nine times an adult’s daily value (so you do not need to eat liver too often). In addition to vitamin A, beef liver is high in protein, B vitamins, iron, zinc, phosphorus, and selenium. Sweet potato baked-potatoes Another vitamin A-rich food is sweet potatoes, also called sweet potatoes (100 grams of sweet potatoes contain 300 micrograms of vitamin A). Sweet potatoes are prepare...