How People Become Obese

How People Become Obese
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An obesogenic society is one that promotes physical inactivity, over-consumption of food and unhealthy food choices. In the United States, approximately 34 percent of the adult population is obese. Globally, the World Health Organization estimates that at least 400 million adults were obese in 2005, and that number is projected to increase to 700 million by 2015. This is the direct result of living in an increasingly obesogenic environment.

Energy Intake

The calories you consume are converted into energy by the body. Foods and beverages laden with fat and sugar are energy dense. Large portions, poor food and beverage choices, frequent snacks and unconscious grazing have become commonplace. Cultural and commercial promotion of fast food, processed convenience food, calorie-packed snacks and event-centered food traditions have resulted in almost constant eating. Whether you're at work, school or home, the temptation to overeat is lurking nearby.

Energy Output

Your body is always burning energy, both at rest and when you are physically active. The amount of energy burned changes with the intensity of the activity. Sedentary activities, such as watching TV, utilize less energy than physically demanding pursuits such as bike riding. The Internet has introduced nonstop surfing, online shopping and video gaming, adding to an excessive amount of time spent engaged in sedentary activities.

Energy Surplus

Excessive food intake and diminished energy output result in an energy surplus stored as fat. Habitual daily surpluses of energy result in weight gain and lead to obesity over time. A decrease in food intake, an increase in energy output or preferably a combination of the two is required to stop this energy imbalance.

Other Obesity Factors

While chronic energy imbalance is the primary cause of obesity, other contributing factors do exist. Some genetic disorders, such as Prader-Willi syndrome, result in obesity. Medical conditions that can cause or contribute to obesity include congenital leptin deficiency, hyperthyroidism, hyperinsulinism and hypercortisolism. Steroids, anti-psychotic drugs, mood stabilizers and antidepressants are a few examples of medications that may have the side effect of weight gain. Eating disorders such as binge-eating disorder or night-eating syndrome also can result in severe obesity.

Prevention/Solution

While it is not an easy or overnight solution, the healthy path for sustained weight loss is one of overall lifestyle change. A balance of energy intake and output results in weight maintenance. An imbalance with a calorie deficit--eating fewer calories than you burn--will produce weight loss. Your health care provider can assist you in developing a food and activity plan specific to your particular situation. Fitness centers, social support groups and mental health professionals also serve as invaluable resources.

References

Article reviewed by OmahaTyppo Last updated on: May 19, 2010

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