Bariatric SurgeryOverweight and Obesity: Prevalence, Consequences, and Causes of a Growing Public Health Problem
Section snippets
Identifying Persons Who Are Overweight and Obese
Overweight and obesity are characterized by an increase in body fat. The NHLBI guidelines classify overweight and obesity based on body mass index (BMI), calculated as weight in kilograms divided by the square of height in meters. Using this classification, a healthy or desirable BMI is between 18.9 and 24.9.2 A person is considered overweight if the BMI is between 25.0 to 29.9 and obese if the BMI is greater than or equal to 30.0. Persons who are obese can be further classified into stage I
Consequences of Overweight and Obesity
The high prevalence of overweight and obesity has an adverse effect on the health of the population, psychosocial functioning, and quality of life for individuals and families, and the economic stability of the nation.
Potential Causes of Overweight and Obesity
Understanding the causes of overweight and obesity is one of the first steps in halting the epidemic. Weight gain is the normal physiologic response that occurs when energy intake exceeds energy expenditure.42 Overweight and obesity will result when this energy imbalance persists.
Eating is the primary method of energy gain. However, eating serves a social and emotional function in addition to the biologic function.43., 44. Hunger, satiety, and thought influence the amount of food a person will
Summary
The current “epidemic” of overweight and obesity threatens to overtake the nation like a tsunami, wreaking havoc on medical, social, and economic health of the United States. More than 60% of adults and the highest percentage of children and adolescents in history are overweight or obese. Although obesity is increasing for all sociodemographic groups, there do appear to be important subgroup differences, particularly among women and African Americans. These differences seem to be associated
References (50)
- et al.
Medical evaluation of the obese individual
Psychiatr Clin North Am
(2005) - et al.
Predictors of weight control advice in primary care practices: patient health and psychosocial characteristics
Prev Med
(2005) - et al.
Techniques used in the measurement of body composition: an overview with emphasis on bioelectrical impedance analysis
Am J Clin Nutr
(1996) - et al.
Evaluation of body composition: practical guidelines
Prim Care
(2003) - et al.
Economic and psychological implications of the obesity epidemic
Mayo Clin Proc
(2003) - et al.
Behavioral treatment of obesity
Psychiatr Clin North Am
(2005) - et al.
Public policy and obesity: the need to marry science with advocacy
Psychiatr Clin North Am
(2005) - et al.
Epidemiology of obesity in the United States
Gastroenterol Clin North Am
(2005) Fat and sugar: an economic analysis
J Nutr
(2003)- et al.
Poverty and obesity: the role of energy density and energy costs
Am J Clin Nutr
(2004)