Archive for September, 2008
BASIC CONCEPTS OF NUTRITION
Know eating is a learning. Some eating habits correct avoid many of the diseases that occur when us people. It is appropriate to take some nutrition education. In this chapter starting from the concepts more basic.
THE IMPORTANCE OF EATING VARIED
It is indis
putable that to live need eat. The different foods that make up our meals have as a function aportanos energy and structural components necessary for our agency work. However, eat it is not always equal to nurture. In the western world have all kinds of food and, however, a part of the population is overfed and malnourished. To these people are sobran calories and lacking micronutrients. The diet is, how, how much and what kind of food must be taken daily to meet the nutritional requirements of our body.
The nutrition is a scientific discipline that studies and analyzes the processes by which our body uses, transforms and incorporates its structures a series of chemicals defined that are part of the food. The modern concept of nutrition was established by Lavoisier to mid 18th century. Showed that the food responded to an energy problem. Without food a body dies as a car without gasoline. But, in addition, to provide the necessary energy, the food must bring certain chemicals that are called nutrients. These are released by the food during digestion.
Macronutientes and micronutrients
The carbohydrates, proteins and fats, – macronutrients, provided the main construction materials for the cell growth. They are also the only source of calories or energy for the body. Each gram of carbohydrates or protein provides 4 calories. Each gram of fat around 9. Micronutrients are vitamins and minerals; do not provide energy and consumed in small quantities. But not cease to be less important from the point of view nutrition. Vitamins and minerals help macronutrients to build and maintain the agency.
Daily, we need some 50 components of these nutrients and in proportions certain. These nutrients are responsible for supplying our agency of the materials necessary for the construction, maintenance, renovation and repair of the human body, as well as to regulate the numerous chemical reactions in it are produced.
The answer to Why are there to eat everything is clear. There is no complete food alone, except the breast milk. A varied diet assures us that our agency come these different nutrients. But in addition, there are to be aware of doing so in the right amount, or more or less.