11. Glucosamine and chondroitin sulfate can be best classified as

A. nutrients.

B. supplements.

C. vitamins.

D. botanicals.

12. According to research studies, which type of diet may help protect against and manage rheumatoid arthritis?

A. Mediterranean diet

B. vegetarian diet

C. low-fat diet

D. South Beach diet

13. What condition in older adults may be partly the result of nutrient deficiencies due to inadequate dietary intake?

A. arthritis

B. menopause

C. heart disease

D. decreased immune function

14. Which of the following is not commonly associated with old age?

A. hearing loss

B. impaired vision

C. reduced fat mass

D. declining memory

15. What is the most common cause of blindness in older Americans?

A. diabetes

B. cataracts

C. xerophthalmia

D. macular degeneration

16. The consumption of foods rich in ________ may slow or prevent the development of cataracts.

A. calcium

B. zinc and copper

C. vitamins C and E and carotenoids

D. vitamins A and D and manganese

17. Which of the following statements is not true about the diet of older adults?

A. Their kilocalorie needs decrease.

B. Their protein needs decrease.

C. Their vitamin D needs increase.

D. Their calcium needs increase.

18. Which nutrient should older adults be careful not to overconsume?

A. vitamin A

B. calcium

C. zinc

D. vitamin B12

19. The need for dietary ________ doubles or triples in older age.

A. vitamin A

B. iron

C. zinc

D. vitamin D

20. What are the benefits of routine physical activity for older adults?

A. It reduces the risk of hypertension and heart disease.

B. It reduces the risk of osteoporosis.

C. It reduces cognitive decline.

D. all of the above