NFS 220 Chapter 7: Nutrition Ch. 7 Outline
20 Feb 2019
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Document Summary
Genetics, fat cell development, set point, intestinal microbiota, overeating, and inactivity all offer possible, but still incomplete, explanations of obesity. Most likely, obesity has not one cause but different causes and combinations of causes in different people. The easy availability of large portions of energy-dense foods is a major environmental factor thought to be contributing to the obesity epidemic. Built environments that lack opportunities for safe physical activity and access to fresh, nutrient-dense foods are also linked with obesity. Weight-loss advice does not apply equally to all overweight people. Some people may risk more through misguided efforts to lose weight than by remaining overweight, whereas others may benefit from even a modest weight loss. Efforts to lose weight via unwise techniques, such as use of over-the-counter supplements and herbal products, can be physically and psychologically damaging. Obese people with high risks of medical problems may need aggressive treatment, including drugs or surgery.
