When the diet contains an adequate amount of protein, what amino acid can be used by the body to synthesize niacin??
A) ?lysine
B) ?valine
C) ?tryptophan
D) ?phenylalanine
C
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Alen is a 30-year-old college student who has recently lost 30 pounds. He lost the excess weight by watching his diet and by working out. He still would like to lose the last ten pounds he gained through his 20s, most of which is in his torso area. He has become frustrated because his weight loss has slowed down. He has seen on the Internet and in several fitness magazines a product advertized as
a weight-loss supplement containing acai berry. The product ads state that the powerful antioxidants in the supplement will melt away fat and remove waste from the body while he is sleeping. Alen is tempted to purchase the product in an attempt to quickly lose his last 10 pounds. However, before he decides to purchase the acai berry supplement he learns that there are other ingredients in the product. The ingredients include ephedra, ginseng, coenzyme Q10, acai berry extract, chromium, potassium, caffeine, and chicory root. What should Alen do to lose the last ten pounds? A) Use the acai berry supplement and continue to work out and eat right B) Look for a different weight-loss supplement that is more effective and has been proven safe C) Be patient and continue to eat well and change up his workout routine D) Try a high-protein, low-carbohydrate diet and increase the duration of his aerobic workouts
Creeping obesity is caused by ________.
A. a decreased level of physical activity B. an increased consumption of kcal, in particular, dietary fat C. a genetic predisposition to obesity D. a combination of an increased consumption of kcal and a decreased level of physical activity
Erika takes megadoses of vitamin B-6 because she thinks it benefits her health. After learning about this vitamin in your nutrition class, which of the following statements about vitamin B-6 would be the most accurate information to tell her?
A. Ingesting large doses of vitamin B-6 can cause nerve damage. B. Women who take megadoses of vitamin B-6 are healthier than those who do not take such high doses of vitamin. C. Vitamin B-6 is the least toxic of the B vitamins. D. Megadoses of vitamin B-6 can result in calcification of soft tissues.
Which factor does not promote tooth decay?
a. the type of carbohydrate consumed b. the frequency of carbohydrate intake c. the stickiness of foods consumed d. the fat content of foods consumed e. saliva production