Nowadays obesity is among the major sanitary problems of the developed countries as well as developing countries. In general, obesity is the excess of the physical weight compared to physical height and that the fat mass of the body is more than non-fat mass of the body.
As it is well known, the nutrition is an indispensable need from birth till death. It makes it possible for the human being to get necessary sufficient and well-balanced nourishing contributions and to use them in its body for growing, developing and pursuing a long healthy and productive life. Nutrition is not to satisfy hunger, to eat or to drink all we want. In the daily life, the individuals (pregnant, the child who sucks, baby, child going to the school, young, old, labor, sportsman, people with cardiovascular diseases, diabetes, high blood pressure, disorder of the respiratory system, etc.) need daily energy changing according to the age, gender, profession, genetic specificities and health state.
To be able to live a healthy life, it is necessary to protect the balance between the input and the consumption of energy. The adipose (greasy) tissue constitutes 15-18 % of the physical weight of the adult man and 20-25 % of the physical weight of the adult woman. When this proportion exceeds the rate of 25 % in men and the rate of 30% in women, we talk about the formation of obesity. When the energetic input exceeds the energy consumption, the energy that was not consumed is stored in the body and then we talk about the appearance of obesity. In parallel, while facilitating life, daily developments, limit daily movements. As it is understood obesity is considered as a disease having fatal repercussions on the life quality and expectancy which appears due to the fact that the energetic input provided by the nutriments (calorie) is more than the energy consumed and with the fat accumulation of the excess of energy in the body (more than 20 %).
World Health Organization defines obesity as "Abnormal or excessive fat accumulation in fat tissues in a degree to cause a health problem". 15- 20 % of the body weight of adult men and 25-30 % of women is fat tissue. It is defined as obesity when this ratio exceeds 25% in men and 30% in women.