Keep The Immune System Healthy By Eating The Right Food
Food is any material eaten to provide nutrition to an organism in the body. Food is generally of animal, plant or fungi origin, and usually contains nutrients, including protein, fats, carbohydrates, vitamins, or other nutrients that are required to survive. The primary function of food is to provide a steady amount of nutrients to an individual by keeping his body nourished. Since food is the only source of nutrients to which the body is able to assimilate, it is also the most important nutrient for life.
One of the major functions of food is to act as a fuel for the human body. This fuel is provided by carbohydrates. Most carbohydrates found in foods are complex molecules of glucose or starch, which are carried via the bloodstream to energy-generating cells. Other types of carbohydrates include simple sugars that are found in fruits, vegetables, and certain kinds of breads. Simple sugars are absorbed more quickly into the body than complex carbohydrates, which means that they must be consumed immediately after they are digested.
The way food enters the body to provide energy is called enterohepatic circulation. This process involves the transport of food through the digestive tract, from the mouth to the stomach and then to the intestines. Enzymes in the food help to break down the food and remove the nutrients they contain. The absorption of nutrients from food is therefore one of the main processes through which nutrition is gained from foods.
Although food energy is derived from carbohydrates, some food types contain more fibers than others do. These fibers are not stored by the body, but are broken down quickly and absorbed into the bloodstream. Fats, on the other hand, are more easily digested by the body and stored as body fat. Because the absorption of fats into the bloodstream is more rapid, they are often used to give people more energy after meals; however, too much fat can be stored as body fat and can make a person feel fat instead of healthier.
Foods that are high in calories also have a high absorption rate. However, these foods are not very nutritious, because calories are not digested by the body. Foods with a high amount of calories are generally easy to overeat, leading to weight gain instead of fat loss.
A balanced diet can include a variety of food in order to provide the proper amounts of all the nutrients necessary to keep the immune system healthy. Food that is high in protein and carbohydrates but low in fat can be helpful in meeting this goal. Also, food with a high fiber content but low calorie count can help, too. However, it is important to avoid overly complex or refined carbohydrates whenever possible. Instead, eat a variety of whole grains, fruits, and vegetables to help keep the nutrient load low and the food more enjoyable.