Nowadays, food has become topic of controversy. The spectacular advances that have experienced food science and nutrition in recent decades reveal the importance of conducting adequate food as one of the best ways to promote health, physical and emotional wellbeing. Proteins, carbohydrates, fats, and balance is the key to a healthy body. There are three naturally occurring nutrients: proteins, sugars, carbohydrates and fats. A healthy diet involves combine them all properly. The correct ratio which would result in a balanced diet would be as follows. Between 15% and 20% should be protein nutrients. A role construction and regeneration of muscle tissue and transport of other nutrients, including fats. Between 25% and 30% should be fats. These nutrients are mainly used by the body for energy. Between 50% and 60% should be carbohydrates. As the fats, carbohydrates are used primarily by the body for energy. (Vitamins, minerals, and fiber). Proteins, fats and carbohydrates are not the only components in food and necessary for a healthy and balanced diet. Vitamins, minerals, fiber and water are nutrients that provide energy, which are very necessary for the proper functioning of the body. Minerals and vitamins have antioxidant properties and long-term can prevent a large number of disorders, including atherosclerosis, the problems of infertility and cancer. These nutrients are present in different proportions in a wide variety of foods, so it is advisable to follow a varied diet as possible. As for fiber, this nutrient is found in some fruits (plums, apples and citrus mainly), vegetables (asparagus and other root vegetables, peas, cabbage), cereals and whole foods. A balanced diet must be adapted to the energy needs of each person. It is essential to have the help and advice of a nutritionist or endocrine to develop an appropriate regime for each person. Starting living premises, the following is a model diet for a person with some energy needs of 1,700 Kcal. Y.: 3000 Kcal. Between 6 and 10 servings a day of grains, derivatives, potatoes and vegetables. Between 2 and 4 servings per day of fruits and fruit juices. Between 3 and 5 servings of vegetables a day. Between 2 and 3 servings a day of milk and milk products. Between 1 and 2 servings per day of meat, fish and eggs. - Should consume oils and fats in moderation, trying not exceed 80 g / day. There you minimize the consumption of sugar, sweets and bakery products, making it only occasionally.