maintaining a healthy weight
Data collected from more than 20,000 people by the third National Health and Nutrition Examination Survey reveal a distressing picture of excessive weight and obesity in American Society( These increases have been caused by greater daily caloric consumption and a relatively low level of consistent physical activity. Today the average American man consumes 2,684 calories per day compared to 1,531 calories in 1980. Additionally only 22 percent of adults engage in thirty minutes of moderately intense activity for the recommended number of days per week. This increase in weight occurs, however, only when the body is supplied with more energy than it can use and the excess energy is stored in the form of adipose tissue, or as we know it fat. The continuos buildups off adipose tissue leads to excess weight and eventually turns into obesity. Obesity is so closely associated with chronic conditions, that medical experts now recommended that obesity itself be defined and treated as a The most prevalent forms of malnutrition in the more affluent countries of the world are overweight and obesity. Most people think of malnourishment a
People gain weight when their energy input exceeds their energy output. Each personÆs caloric activity requirements vary directly according to the amount of daily psyical work completed. Even within a given general job type, the amount of caloric expenditure will vary according to the psyical effect required. However, malnutrition can also be a disease of plenty. In the ectomorphic body type, a tall slender body seems to virtually protect individuals from difficulty with excessive weight. Mesomorphs have their greatest difficulty with obesity during childhood, when eating habits fail to adjust to a decline in physical activity. Research reveals that this protein, leptin, would be found in lower levels of overweight mice, than normal mice. Ectomorphs, usually have difficulty maintaining normal weight for their hieght. Recently the role of genetic contribution has been defined, somewhat by the discovery of ôfat geneso in mice and an obesity gene in humans. They also suspected that leptin would be found in lower levels in obese humans compared with those of average weight. That is, ôHow can people tell the difference between obesity and being overweight?o Nutritionist have said that obesity is apparent when fat accumulation produces a body weight that is more than twenty percent above an ideal or desirable weight. Any calories consumed beyond those that are used by the body are converted to fat stores. Due to the fact that our food supply exceeds the needs of our population, people are able to eat more than is required for healthy living. An inheritance basis for obesity could involve the interplay of somatotype (body build up) and other unique energy- processing characteristics passed in from parents to their children. On the other hand, people are said to be overweight if their weight is between one percent and nineteen percent above their desirable weight, the more likely they are to be labeled obese.
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