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| Why This Is Important |
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Viewpoints about obesity are changing. What was once considered a "disease with the primary causal factor being the individual's inability to control their eating" (Seto, 1998), is now seen as a "complex and multifactorial chronic disease that develops from an interaction of genotype and environment. Our understanding of how and why obesity develops is incomplete, but involves the integration of social, behavioral, cultural, physiological metabolic and genetic factors" (NIH/NHLBI, 1998, p vii). |
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A review of the literature reveals many articles about obesity and its associated problems. Guidelines have been provided by various organizations with suggestions for working with the obese clients, but the questions remain: What works for women? Can practitioners help motivate women to improve their health with constructive weight loss measures? What seems to be working? What doesn't seem to be working ? Can the results be lasting ? What information and support is available for practitioners? |
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Available guidelines and discussions of appropriate obesity management are exploding with conflicting viewpoints about both causation and prevention. This inquiry investigates a variety of recommendations by organizations concerned with obesity and its associated problems, and then develops strategies that will help practitioners work more effectively with their obese clients. Specific strategies include nutritional recommendations, lifestyle changes and specific educational approaches. |
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Insulin resistance (IR) and the glycemic index (GI) are two emerging concepts that appear to be helpful for practitioners working with their obese clients (Ammon, 1999). IR or insulin sensitivity is defined as a reduced sensitivity of the body to insulin's effect on blood sugar (Bernstein, 1997, p 370). The GI is a standardized way of measuring the rise of blood glucose after the consumption of a particular food (Ammon, 1999, p 7). Specific foods are compared with a reference food and then ranked with other foods based on their immediate effect on blood sugar levels (Miller, Wolever, Colagiuri, & Foster-Powell, 1999, p 24). |
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Evidenced Based Clinical Practice Guidelines (EBCPGs) are available from the author with reference to current research. These CPGs help practitioners and consumers identify predisposing factors that contribute to obesity such as IR and utilize tools that have been shown to help with the improvement of IR, health indicators (HI) and hopefully weight loss, such as the GI. Readily available common clinical measures, are discussed to assist the clinician working with at risk clients. |
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The National Institutes of Health/National Heart, Lung , and Blood Institute (NIH/NHLBI), estimates 97 million adults in the United States are overweight or obese (NIH, 1998, p vii). Obesity is associated with an increased risk of coronary heart disease, stroke, hypertension, type 2 diabetes and dyslipidemia. Obesity is the second most preventable cause of death, second only to smoking, and a major modifiable factor of cardiovascular disease (Robbins and Shair, 1999). Recent surveys suggest 54.9% of adults are overweight and 22.3 % of U.S. adults are obese (Anderson, 1999). One commonly accepted definition of obesity is defined as a Body Mass Index (BMI) of 30 kg/m2, while of overweight is: a BMI greater than 25 kg/m2 (Ammon, 1999). |
| A recently published article from the New England Journal of Medicine cites the BMI as a significant indicator for mortality in U.S. adults. The authors (Calle, Thun, Petrelli, Rodriguez & Heath, 1999, p 1103) suggest that a BMI was associated with higher rates of death from all causes, including both men and women in all age groups. They go on to explain that approximately 33.6 % of adults in the United States fit the World Health Organization (WHO) definition of a BMI between 25.0 and 29.0, and 22.3 % of the same population have a BMI of 30.0 or greater. Mortality for people with a BMI between 25 and 30 was increased by about 10 to 25 percent. Currently about one-fifth of U.S. adults have a BMI of 30 or more (Williamson, 1999). |
| Screening References |
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Ammon, (1999, p2 ) cites associated risks of obesity: Obesity contributes to other illnesses, such as hypertension, coronary artery disease, type 2 diabetes, cerebrovascular accident (CVA), dyslipidemia, gallbladder disease, osteoarthritis, sleep apnea, and endometrial, breast, prostate and colon cancers. In addition to the physical health risks associated with obesity, there is also a social stigma. One study showed that among women, obesity is associated with decreased use of health care services, possibly increasing their health risks. |
| Ammon (1999, p 2 ) continues, "The cost of treating obesity and health-related concerns continues to increase. Health care costs directly attributable to obesity are more than $68 billion per year with an additional $30 billion spend by consumers on weight reduction programs and food." |
| Specific conditions seen by women's health practitioners, including midwives, have obesity as a key component: Polycystic Ovarian Syndrome (PCOS), type 2 diabetes, gestational diabetes (GDM), hypertension and metabolic syndrome X. |
| Obesity's association with both IR and hyperinsulinemia is currently being studied and it is estimated that insulin resistance may be present in 20% of the non-diabetic population (Ferrannini, 1998). Hopkinson et al. (1998), suggest, "the principle underlying disorder (of polycystic ovarian syndrome) is one of insulin resistance, with the resultant hyperinsulinemia stimulating excess ovarian androgen production." This article goes on to suggest that current management with birth control pills might exacerbate insulin resistance, and recommends other approaches to obesity for this population. |
| Insulin resistance is seen before the onset of type 2 diabetes, and has also been linked to GDM. Overweight and obese individuals are more likely to develop type 2 diabetes, and the associated risks of altered lipid and glucose metabolism (Robbins, and Shair,1999). Folsom et al. (1999, p 1), studied the associations of ischemic stroke, body fat distribution, diabetes and insulin resistance, and conclude, "Diabetes is a strong risk factor for ischemic stroke. Aspects of insulin resistance, as reflected by elevated waist-to-hip rations and elevated fasting insulin levels, may also contribute to a greater risk of ischemic stroke." Carr and Gabbe (1998) suggest that GDM occurs in women who have insulin resistance and a relative impairment of insulin secretion. |
| Insulin resistance is also a significant factor in hypertension metabolic syndrome X and possibly pre-eclampsia. The cluster of metabolic disorders associated with syndrome X includes insulin resistance, elevated triglycerides, a prothrombotic state and hypertension. (Grundy, 1999.) |
| Ferrannini(1998) states "...insulin resistance is a central and potentially reversible problem in type 2 diabetes". The suggestion that this is a potentially reversible condition implies by association that the other conditions mentioned are also potentially reversible. Once a clinician understands and identifies IR within the population they serve, actions can be taken that might correct the condition. Recognition and initiating steps toward improvement are the first steps of primary prevention. |
| Health care practitioners, including midwives, are exposed to these conditions in their practices, yet many times feel inadequate to provide the support needed to promote significant and permanent changes. Williamson (1999) encourages clinicians to take the primary prevention of obesity seriously, and encourages improved communication between medicine and public health concerning this issue. Anderson (1999, p 1) summarizes the dilemma faced by practitioners, and consumers: |
| Obesity is a major health problem in America. Weigh loss is associated with improvements in obesity-related health complications, but patients and practitioners are frequently disappointed by the long-term results of weight control efforts. Recent research has yielded new finding concerning the causes of obesity, as well as new goals for obesity treatment. |
| Considering the fact that IR is seen before the onset of major health conditions, and new research suggests it is a reversible condition, CPGs can provide practitioners with tools for screening their overweight and obese clients for IR and then providing them with guidance and information to help promote healthy lifestyle changes that have the potential to improve their health. |
| For more about this topic, please contact me, and I can send you the rest of my presentation. Be certain to check my reference list. |
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