In Vietnam the rate of adults being overweight, obesity accounts for about 25% of the population. In modern society, overweight, obesity in adults are increasingly popular trend and become one of the major challenges for the health care programs in all countries.According to the World Health Organization, overweight and obesity is the condition of excessive fat accumulation or unusual in a region of the body or the whole body to affect health. Accordingly, "body mass index" (BMI-Body Mass Index) is calculated by weight (kg) divided by the square of height (in metres) to assess the nutritional status of adults. According to the general recommendations of the World Health Organization, a healthy adult, proper nutrition, their BMI ranges in certain limits from 18.5-24.9. If BMI ≥ 25 are considered overweight, BMI ≥ 30 is obese.The basic causes of overweight, obesity is due to energy imbalance between calories taken in to the body and the calories are used. The epidemiology that increase tendency to overweight, obesity rates in the community now mainly due to the increase in the consumption of foods rich in energy, have high fat content with less physical activity lifestyle, lazy. Changing eating habits, lazy athlete as a result of the change in terms of economy, society and environment. Next to that is the issue of lack of timely assistance policy, the health sector, agriculture, transport, urban planning, business processed foods available, education, advertising, marketing ... Obesity is also related to the family by the elements have the same characteristics of lifestyle, are expressed by the children being overweight when the father or mother being overweight, obesity.
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