The Balanced Diet Protein is most easily obtained from eating animal tissue, but many vegetables contain a lot of protein as well. Certain meats, such as lamb, beef, and pork, are good sources of protein, but high in fat, too. So a lot of people are cutting back on these meats in their diet and adding more poultry and fish, which contain much less fat. Vegetables contain a variety of vitamins and minerals, and themselves are predominately carbohydrates. The complex carbohydrates found in broccoli, potatoes and other vegetables are high in nutrition, relatively low in calories, and far better for you than the simple carbohydrates such as table sugar.
Fruits are also carbohydrate, but are closer in nature to sugar than most vegetables.
They lack protein, but they are good sources of a number of other nutrients. Fructose, the sugar found in fruit, is many times sweeter than processed sugar, so it gives you more sweetness per calorie than high-sugar desserts. But there are experts who believe that we eat too much protein already, and not nearly enough carbohydrate. Everyone accepts that eating too much fat is harmful. Carbohydrates are important to the body in many ways.