TAILIEUCHUNG - Chapter 041. Weight Loss (Part 2)

Energy balance and pathophysiology of weight loss. Food intake may be influenced by a wide variety of visual, olfactory, and gustatory stimuli as well as by genetic, psychological, and social factors. Absorption may be impaired because of pancreatic insufficiency, cholestasis, celiac sprue, intestinal tumors, radiation injury, inflammatory bowel disease, infection, or medication effect. These disease processes may be manifest as changes in stool frequency and consistency. Calories may also be lost due to vomiting or diarrhea, glucosuria in diabetes mellitus, or fistulous drainage. Resting energy expenditure decreases with age and can be affected by thyroid status. Beginning at about. | Chapter 041. Weight Loss Part 2 Energy balance and pathophysiology of weight loss. Food intake may be influenced by a wide variety of visual olfactory and gustatory stimuli as well as by genetic psychological and social factors. Absorption may be impaired because of pancreatic insufficiency cholestasis celiac sprue intestinal tumors radiation injury inflammatory bowel disease infection or medication effect. These disease processes may be manifest as changes in stool frequency and consistency. Calories may also be lost due to vomiting or diarrhea glucosuria in diabetes mellitus or fistulous drainage. Resting energy expenditure decreases with age and can be affected by thyroid status. Beginning at about age 60 body weight declines by an average of per year. Body composition is also affected by aging adipose tissue increases and lean muscle mass decreases with age. Significance of Weight Loss Unintentional weight loss especially in the elderly is relatively common and is associated with increased morbidity and mortality rates even after comorbid conditions have been taken into account. Prospective studies indicate that significant involuntary weight loss is associated with a mortality rate of 25 over the next 18 months. Retrospective studies of significant weight loss in the elderly document mortality rates of 9-38 over a 2- to 3-year period. Cancer patients with weight loss have decreased performance status impaired responses to chemotherapy and reduced median survival Chap. 77 . Marked weight loss also predisposes to infection. Patients undergoing elective surgery who have lost kg 10 lb in 6 months have higher surgical mortality rates. Vitamin and nutrient deficiencies may also accompany significant weight loss Chap. 71 . Causes of Weight Loss The list of possible causes of weight loss is extensive Table 41-1 . In the elderly the most common causes of weight loss are depression cancer and benign gastrointestinal disease. Lung and gastrointestinal cancer are

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• Weight Loss
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• bài giảng bệnh học
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• Physiological loss in weight
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• Body weight loss
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• Body Weight
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• Blood tests
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• chile peppers
• food flexibility
• restrictive diets
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• BMC Pediatrics
• Weight velocity
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• Weight Loss Surgery Cookbook FOR DUMmIES
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