Carbohydrates appear to be the best-known type of calorie, proteins on the other hand, appear to be eclipsed compared to the fame of fats and carbohydrates. However, it is a type of important calorie needed to develop muscles.
The proteins have 4 kilocalories / gram. Most of these types of calories can not be produced by the human body and must be generated by food. The major sources of protein are included in egg white, which is one of those that provides a large amount of protein, as well as nuts, meats, legumes, grains, dairy products (milk and cheese).
In the case of egg white, it provides the amino acids that are needed to have good health, as well as to maintain strong muscles; Besides being low in fat and calories, egg white is the ideal food for diabetics and athletes.
The egg white is recommended for people who care for their weight, because their proteins provide a feeling of satiety faster and longer.
According to recent studies, men between 18 and 70 years should consume between 56 grams of protein daily to avoid deficiencies. On the other hand, women of the same age should consume at least 46 grams a day. Those who want to build muscles usually consume many proteins in their diet.
Fat, as its name suggests, is probably the type of calorie less desired by many. However, they also play an important role in the normal functions of the organism. For example, it could not absorb vitamins A, E, D, and K if it were not for fats.
They are also an important source of fatty acids and play an important role in maintaining healthy skin and hair. Protection is another of its functions as it protects other organs from blows. They are also thermal insulators which is very important for people who live in cold climates.
Fats can be obtained from both animals and vegetables. Some animal fats are found in butter, lard and fish oil, while in plants are soybeans, peanuts, sunflower seeds, olives, coconuts and vegetable oils.