As aging progresses, skin becomes less able to synthesize ____.
a. vitamin A
b. vitamin D
c. vitamin K
d. vitamin B12
e. vitamin E
Question 2
The biological changes associated with aging ____.
a. occur at the same rate in all persons
b. occur in all, but the rate may be altered by nutrition and lifestyle
c. may be prevented by megadoses of vitamin E
d. occur at a faster rate in males than females
e. may be reversed by consuming large amounts of phytonutrients