According to data from the National Health and Nutrition Examination Survey, which one of the following groups is at greatest risk of vitamin D deficiency?
A) Mexican Americans
B) Non-Hispanic Blacks
C) Non-Hispanic Whites

Question

Quizplus · Accepted Answer

Non-Hispanic Blacks are at greatest risk of vitamin D deficiency, with a prevalence of 31% compared to 12% for Mexican Americans and 3% for non-Hispanic whites. This may be due to higher melanin content in the skin, which reduces the skin's ability to produce vitamin D from sunlight.

According to Data from the National Health and Nutrition Examination