Nutrition+HW1+MC

1.	What is the rationale behind using BMI to judge obesity? Your BMI is supposed to give you an idea of how much of your weight is due to adipose tissue, or fat. The taller you are, the more you could weigh without it being due to fat. 2.	What disorders are associated with obesity? Anorexia nervosa, bulimia nervosa, binge-eating disorder, and muscle dysmorphia. 3.	Why might carbohydrates be the cause of the obesity epidemic today? Foods with carbohydrates have a high glycemic index because the blood glucose response to its food is high. When the level is high, the pancreas produces an overload of insulin to bring the level under control. A high insulin level may lead to diabetes type2 and increase your fat deposition. 4.	Why might fats be the cause of the obesity epidemic today? They might be harmful because it causes cardiovascular disease due to arteries blocked by plaque. 5.	What types of fats are dangerous to our health? Saturated fats, oils, and/or trans fats. 6.	What type of fat is protective for cardiovascular disease? Unsaturated fats lower LDL cholesterol levels. 7.	Proteins provide the essential amino acids; why shouldn't they be eaten as an energy source? Because the whole process leads to excretion of calcium and that will lead to kidney stones. 8.	What is the chief contribution of each of these in the body -- carbohydrates, proteins, fats, fruits, and vegetables? Carbohydrates are the preferred energy source for the body, proteins supply essential amino acids, fats contain cooking oils, and fruits and vegetables are energy sources. 9.	In general, what does the USDA food pyramid tell you? They help you decide how those calories should be distributed among the foods to eat. It provides recommendations concerning the minimum quantity of foods in each group that should be eaten daily. 10.	Name and describe four eating disorders. Anorexia Nervosa is a severe physiological disorder characterized by an irrational fear of getting fat that results in the refusal to enough food to maintain a healthy body weight. Bulimia Nervosa is a when a person binge eats, and then purges to avoid gaining weight. Binge eating disorders are episodes of overeating that are not followed by purging. Muscles dysmorphia thinks his or her body is undeveloped.