Food is to eat out of necessity or desire. Feed is the process undertaken by the agency to receive food and transform it into substances it needs to function properly.

A healthy diet is a prerequisite for good health. Currently, all studies show that proper nutrition is one of the best preventive medicine.

It is necessary to bring the body all the nutrients it needs, taking into account the age and physical activity of each individual. and physical activity of each individual. In addition to food is important to take at least two liters of water a day.

Food Pyramid

One way of presenting the traditional graphic food needs of the body has been breaking down food in a four-level pyramid. At higher altitudes in the least amount of food pyramid should consume:

·  Base of the Pyramid: what took the cereal as pasta, bread, rice or maize. or maize. They provide carbohydrates and fiber. and fiber. It also includes potatoes and sugar.

·  Second level of the pyramid: occupy vegetables, fruits and vegetables. They are very necessary. They provide vitamins, minerals, fiber and often have little fat.

·  Third level of the pyramid: there are the milk, eggs, meat and fish. and fish. These foods other than vitamins or minerals that may contain are generally richer in proteins and amino acids.

They substances that the body can not by itself produce. However, one should not abuse their consumption against the other, because their fat content is much higher than the food at lower levels.

·  The top of the pyramid: dealing oils and butters. They are the richest in fat, and while its consumption should be small, are also needed.

Remarks

In many cases, instead of a pyramid is represented in a food wheel that classifies food into six groups and includes the need to drink enough water and practice exercise.

Those portions of the wheel vary in size depending on the quantities that are required. I see two groups of food energy, two plastic food and two food regulators.