The current obesity metabolic most common in industrialized countries has reached rates of epidemic among men, women and children of North America, according to Statistics Canada, where 48% of Canadians aged 20 to 64 years are overweight (body mass index of 25 <) also shows results derived from a survey test of Health and national nutrition prevalence of overweight and obesity in the United States, a high rate of 64% and raise inconvenience such in adult blood raises the attention is that children also develop the have severe obesity in the prime of life in one study in 1999 found that 37 % of children between the ages of 2-11 years were then classified as the overweight, with a rating, half of them among those who are obese body mass 30 index <, this according to a survey of statistical national Canadian prolonged for children known childhood October obesity (2002) and include contributing factors in this changes the social and psychological factors that result in a relative increase in the energy intake compared to the consumption of energy, coupled with a private obese fat accumulation statistical disturbances fat and impaired glucose tolerance and insulin resistance, all turn serious factors for injury syndrome metabolic and type II diabetes and cardiovascular disease, it has identified many estimates of the economic cost of obesity and overweight by more than US $ 100 billion annually, and there is a need for strategies lifestyle for effective prevention and treatment of overweight among the world's population.
In addition to full energy consumption There are a number of studies have been conducted on children and adults indicated that the composition of the diet plays an important role in weight loss and maintaining weight changes and although the prevailing view, including "Canadian Guide food health food", also supported Heram food issued by the US Department of Agriculture diet containing 30% or less of fat, however, 15-20% of energy from protein and 50-55% of the energy from the vehicle carbohydrates for the population in general, however, the suitability of this strategy for the prevention of obesity is documented clear, in spite of a decrease of about 40% of energy from fat diet in the United States in 1965 to 34% in 1991, however, this indicator of obesity is already growing, we have made it clear in advance that it can support the effectiveness of weight loss and improvement in physical configuration and configuration adipose and well maintained on glucose tolerance following a low-carbohydrate diet a few calories for adult women are overweight, current research has begun to develop preliminary observations a direct comparison to conventional diet low fat diet limited energy equal to the low-carb limited capacity of the overweight men and women group.
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