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Obesity

 

            
             Many Canadians are at increased health risk because they are obese. Obesity is when a person weighs more than what a healthy person should weight, because of the excess build up of fat cells (where the body stores unused ATP as ADP). It results when there is an imbalance between the energy intake of the body compared to its energy consumption. Basically when someone consumes more calories than you would expend in your daily activities. .
             Obesity is a known risk factor for chronic disease including cardiovascular disease, diabetes, high blood pressure, stroke, some forms of cancer, arthritis gall bladder disease. Everyone needs a certain percentage of body fat for stored energy, heat insulation, shock absorption and other functions. As a rule women have more fat then men. The general rule is that men with more than twenty-five percent body fat and women with more than thirty are considered obese. With increasing age, fat percentages rise in both males and females, reaching thirty to forty percent of the total body weight.
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             There are many different methods to calculate body fat. The most accurate method is to weight a person underwater, a procedure that requires sophisticated equipment in a laboratory setting. The most common methods for measuring body fat are the skinfold test, also known as the calliper test and the second involves sending a harmless electrical current through a person's body (bioelectric impedance analysis). The results from the later two methods should be viewed sceptically, they can be skewed if the person doing the testing is inexperienced or if the person receiving the test is severely obese. .
             Obesity is related is many health problems as mentioned above, but it can also lead to death. The death rate (calculated per 100,000 people) in Canada from obesity has been climbing for years. In 1969 the total number of deaths attributed to obesity was 108, in 1983 the number jumped to 130 and in 1997, 145 people died from obesity.


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