Answer to Question 1
A
ICSs are controller medications and are not used as needed for symptoms, so this statement by the patient indicates a need for further teaching. The other statements are true.
Answer to Question 2
A
Epidemiologic evidence indicates that people who eat fruits and vegetables regularly have a decreased risk of cancer. Although retrospective studies have suggested major benefits from antioxidants, no intervention studies have determined conclusively that antioxidants prevent cancer. Large doses of vitamin A can produce a yellow hue to the skin. Antioxidants can be beneficial, but in certain populations, such as smokers, they may be harmful.