271). Causes of Obesity According to the USDA, at the start of century 21st American people have increased their daily caloric intake by consuming five hundred calories more than in 1970. As cited by Whitney & Rolfes (2011), there are many recognized causes of obesity such as genetics, environment, culture, socioeconomic, and metabolism among others; but the cause most evident is that food intake is higher than the calories burned in physical activity. Excess of energy from food is stored in the body as fat causing an increase of weight. During the course of the last 40 years, obesity has grown enormously in the United States and the rates remain on the rise (pgs.
Obesity in the United State has increasingly been cited as major health issue. Findings from the National Health and Nutrition Examination Survey show that the proportion of adults who are obese has more than doubled from 15% in 1971–1974 to 34% In 2003–2006 for adults 20-74 years.In 1990, obese adults made up less than 15 percent of the population in most US states however by the year 2010 , 36 states had obesity rates of 25 percent or higher and 12 of those states had obesity of 30 percent or higher (CDCP 2012). Cutler et al. (2006) suggested that increases in food consumptions prompted by falling cost of food is the major cause behind the surge in obesity since 1980. A study of pricing effects on food choices shows that price reduction strategies promote the choice of targeted foods by lowering their cost relative to alternate food choices (Jacobson and Brownell 2000).
Around the world, over one billion adults and more than 10% of children are considered to obese. As the World Health Organization predicts, the number of obese children will increase to 700 million and nearly 2.3 billion adults by 2015. In addition, childhood obesity is correlated with a higher probability of becoming obese adults, premature death, and disability (Kaltra, De Sousa, Sonavane, & Shah, 2013). Many researchers believe that racial composition of communities associated with obesity and that obesity has a big impact on various subgroups in the United States. In a study, the researchers compared the mean body mass index values among the popular races.
By the year 2020, more than 3.5% of the North American, and 4.4% of the European population is projected to be aged 80 years and over. The fastest increase in the elderly population will take place in the Asian region. Whereas the elderly population of Sweden and of the United Kingdomis expected to increase by 33 and 45%, respectively, the corresponding increase in a number of Asian countries will be between 200 and 400%.
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