“obesity bmi and waist circumference _obesity definition change 1998”

Excess weight is a known risk factor for many chronic diseases, such as diabetes and heart disease. Obesity can also be linked an increased risk for developing some cancers. To clarify the effects of weight gain on cancer risk, researchers in 2007 conducted an analysis of many studies reported in medical journals that describe 282,137 cases of cancer. The researchers wanted to see if weight gain had an effect on the risk for certain cancer types.
We need to learn more about the causes of obesity, and then we need to change the ways we treat it. When obesity is accepted as a chronic disease, it will be treated like other chronic diseases such as diabetes and high blood pressure. The treatment of obesity cannot be a short-term “fix” but has to be an ongoing lifelong process.
So why don’t people just stop eating foods high in fat and sugar if they know they can cause physical problems? Scientists are still searching for the answers, but it appears that our brains have been wired to encourage the consumption of calorie-rich foods, even at the expense of good health. Quite simply, these foods bring us pleasure.
Excess weight places mechanical and metabolic strains on bones, muscles, and joints. In the United States, an estimated 46 million adults (about one in five) report doctor-diagnosed arthritis. (1) Osteoarthritis of the knee and hip are both positively associated with obesity, and obese patients account for one-third of all joint replacement operations. (39) Obesity also increases the risk of back pain, lower limb pain, and disability due to musculoskeletal conditions.
Obesity is known to cause heart disease, stroke, diabetes and certain cancers. Developing any of these illnesses and diseases can have debilitating results, including loss of employment, inability to cover medical costs and care, and disability. Savings can be wiped out, causing tremendous financial hardships — at a time when unemployment is at an all time high. And, to compound the problem, many Americans are living without health insurance, which is a huge financial risk in and of itself.
In addition, the researchers evaluated peak oxygen consumption during exertion with treadmill walking. On that test, obese elderly people who both dieted and exercised improved 17 percent from their baseline. The diet-only group showed a 10 percent gain, and the exercise-only group improved about 8 percent.
• Psychiatric. Weight loss is depression’s key symptom and may be present with bipolar, personality, dysmorphic, and anxiety disorders, as well as substance abuse and alcoholism, and nicotine addiction. 5
Although strength training programs have been shown to reduce body weight significantly (and increase muscle mass), convincing overweight clients to eat properly is even more important in helping them lose fat. Consult a registered dietician and use the information in chapter 10 that discusses food selection and substitutions for heart-healthy eating to help your overweight clients attain a more desirable bodyweight. Also, encourage them to drink lots of water before, during, and after workouts, especially in hot and humid weather or in training areas without ideal air circulation. Suggest that they wear loose clothing to decrease chafing and dress in layers so that they can remove articles to avoid overheating (Flood and Constance 2002).
It’s commonly known and scientifically proven that obesity can contribute to many diseases. In fact, the majority of organs and body systems are negatively affected by obesity. Most commonly, obesity may help bring on hypertension, high cholesterol, heart disease, and certain cancers. The increase in people with type 2 diabetes is of particular concern, as diabetes is a well-known risk factor in heart disease, kidney disease, stroke, and other serious medical conditions. Physical disability and mobility can also be a major problem due to the effect of weight on joints.
Many Americans aren’t very physically active. One reason for this is that many people spend hours in front of TVs and computers doing work, schoolwork, and leisure In fact, more than two hours a day of regular TV viewing time has been linked to weight gain and obesity.
Likewise, increasing your activity level is largely a matter of changing your attitude. You don’t have to become a marathon runner. Thirty minutes of aerobic activity five days a week will make a significant difference in your health. Look for ways to increase your activity level doing things you enjoy.
24. Yeh SS, Hafner A, Chang CK, et al. Risk factors relating blood markers of inflammation and nutritional status to survival in cachectic geriatric patients in a randomized clinical trial. J Am Geriatr Soc 2004;52:1708–12 [PubMed]
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Let’s assume for a moment that somehow America, food deserts and all, becomes absolutely lousy with highly affordable outlets for wholesome, locally sourced dishes that are high in vegetables, fruits, legumes, poultry, fish, and whole grains, and low in fat and problem carbs. What percentage of the junk-food-eating obese do we want to predict will be ready to drop their Big Macs, fries, and Cokes for grilled salmon on chard? We can all agree that many obese people find the former foods extremely enjoyable, and seem unable to control their consumption of them. Is greater availability of healthier food that pushes none of the same thrill buttons going to solve the problem?
We went into a KFC and found ourselves traversing a maze of signage that put us face-to-face with garish images of various fried foods that presumably had some chicken somewhere deep inside them. “The more they want you to buy something, the bigger they make the image on the menu board,” Lesser explained. Here, what loomed largest was the $19.98 fried-chicken-and-corn family meal, which included biscuits and cake. A few days later, I noticed that McDonald’s places large placards showcasing desserts on the trash bins, apparently calculating that the best time to entice diners with sweets is when they think they’ve finished their meals.
A state of excess body fat, which is a premorbid addiction disorder, defined as 20% above an individual’s standard weight (the ideal body weight is 21 kg/m2; a person is considered obese with a body weight above 30 kg/m2).

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