Does High Dietary Zinc Reduce Migraine Risk?

To receive AMA PRA Category 1 Credit™, you must receive a minimum score of 75% on the post-test.

1. You are a member of the health care team for a 27-year-old woman with episodic migraine. On the basis of the cross-sectional study of National Health and Nutrition Examination Survey (NHANES) data from 1999 to 2004 by Liu and colleagues, which one of the following statements about the relationship between dietary zinc intake and migraine is correct?
   Compared with those in the lowest dietary zinc intake quintile, those in the highest quintile had a 10% lower risk for migraine
   There was no dose-response association between dietary zinc intake and migraine
   Zinc intake from supplements alone was inversely and robustly associated with migraine
   Compared with those in the lowest total zinc intake quintile (Q1), those in Q3 and Q4 had 38% and 33% lower risk for migraine, respectively
2. According to the cross-sectional study of NHANES data from 1999 to 2004 by Liu and colleagues, which one of the following statements about the clinical implications of the relationship between dietary zinc intake and migraine is correct?
   Zinc may affect migraine via its antioxidant and anti-inflammatory properties
   Sources of dietary zinc include eggs, milk, and green vegetables
   The study proves that zinc deficiency causes migraine
   The study supports zinc supplementation for most adults