ASSIGNMENTS PHYSICAL ACTIVITY- DISEASE AND PUBLIC HEALTH
Obesity is becoming a leading killer disease in the world. The changing nature of life has led to change in lifestyle which has led to emphasis cases of lifestyle diseases. It is estimated that more than half of the population of United States is obese or overweight. However epidemiological studies show ethnic and racial dimension with regard to prevalence of obesity in the population. African Americans especially African emphasis women have a higher prevalence of obesity compared to other races. There are many genetic and environmental factors which have been predisposing African Americans to increased cases of obesity. Obesity does not only affect health and social life of the individual but it is also a gateway to development of many other chronic illnesses. If not well managed, obesity leads to other terminal illnesses like diabetes, cardiovascular diseases and others. Change in diet and tendency towards a sedentary lifestyle have been identified as the leading causes of obesity all over the world. The increasing prevalence of obesity in the population has been correlated with myriad of environmental, behavioral, physiological, and genetic factors. Attenuated metabolic response to the exposures in the environmental combined with a number of predisposing factors and low level of energy expenditure leads to positive energy balance which increases body weight. Several researches have underpinned the importance of diet modification and exercise in reducing body weight. However the emphasis has been mainly on diet modification with less attention on the role of exercises. Regular exercises can help to burn the excess body fats leading to reduction of obesity.