Thinner isn t always better. A number of studies have【C1】______that normal-weight people are in fact at higher risk of some diseases compared to those who are overweight. And there are health conditions for which being overweight is actually【C2】______. For example, heavier women are less likely to develop calcium deficiency than thin women. 【C3】______, among the elderly, being somewhat overweight is often an【C4】______of good health. Of even greater【C5】______is the fact that obesity turns out to be very difficult to define. It is often defined【C6】______body mass index, or BMI. BMI【C7】______body mass divided by the square of height. An adult with a BMI of 18 to 25 is often considered to be normal weight. Between 25 and 30 is overweight. And over 30 is considered obese. Obesity, 【C8】______, can be divided into moderately obese, severely obese, and very severely obese. While such numerical standards seem【C9】______, they are not. Obesity is probably less a matter of weight than body fat. Some people with a high BMI are in fact extremely fit, 【C10】______others with a low BMI may be in poor【C11】______. For example, many collegiate and professional football players【C12】______as obese, though their percentage body fat is low. Conversely, someone with a small frame. may have high body fat but a【C13】______BMI. Today we have a(an) 【C14】______to label obesity as a disgrace. The overweight are sometimes【C15】______in the media with their faces covered. Stereotypes【C16】______with obesity include laziness, lack of will power, and lower prospects for success. Teachers, employers, and health professionals have been shown to harbor biases against the obese. 【C17】______very young children tend to look down on the overweight, and teasing about body build has long been a problem in schools. Negative attitudes toward obesity, 【C18】______in health concerns, have stimulated a number of anti-obesity【C19】______My own hospital system has banned sugary drinks from its facilities. Many employers have instituted weight loss and fitness initiatives. Michelle Obama has launched a high-visibility campaign【C20】______childhood obesity, even claiming that it represents our greatest national security threat. 【C1】