Obesity is physiological condition in which body fat is high than normal; while overweight is physiological condition in which body weight is high. A person may be overweight from extra muscle, bone, or water, as well as from having too much fat. Obesity is a major cause of morbidity and mortality. Obesity has reached outbreak proportions globally, with more than 1 billion adults overweight - at least 300 million of them clinically obese - and is a major donor to the global burden of chronic disease and disability. Often parallel in developing countries with under-nutrition, obesity is a complex condition, with severe social and psychological proportions, affecting virtually all ages and socioeconomic groups. Increased utilization of more energy dense, nutrient poor foods with high levels of sugar and saturated fats, combined with reduced physical activity. In this review the discussion is done about the causes, complications, prevention, approaches to treatment and related parameters of obesity.
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