What Vitamin Deficiency is Most Common in the US?
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5 min read
According to the National Health and Nutrition Examination Survey (NHANES) data from 2017 to 2020, functional and absolute iron deficiency are quite prevalent, affecting 15% and 14% of US adults respectively. However, the most commonly discussed and widespread vitamin deficiency in the US is for vitamin D. A significant portion of the American population experiences suboptimal levels of this critical nutrient.