Which statement is true regarding vitamin deficiency?

• A. Americans Lack Potassium on a Regular Basis
• B. Vitamin C deficiency is common in the United States
• C. Vitamin D deficiency is rare
• D. Vitamin A deficiency is the leading public health issue in the United States

Answer: (D)

Understanding which vitamin deficiencies are most common helps you evaluate statements about public health. In the United States, vitamin A deficiency is not a leading health problem; it’s actually rare due to fortification of foods and a generally varied diet. The nutrient concern that often gets more attention is vitamin D deficiency, which can be common in certain groups—older adults, people with limited sun exposure, those with higher skin pigmentation in northern latitudes, or individuals with limited dietary intake of vitamin D. Vitamin C deficiency, by contrast, is uncommon thanks to ready access to fruits and vegetables. Potassium is a mineral, not a vitamin, so it isn’t described in terms of vitamin deficiency. So, the claim that vitamin A deficiency is the leading public health issue in the United States doesn’t align with current patterns of nutrient deficiencies in this country.