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...Cdc s second nutrition report a comprehensive biochemical assessment of the status u population measures indicators diet and national on in provides reference data including fat water soluble vitamins iron iodine other dietary biomarkers that are important to human health http www gov nutritionreport new uses nhanes results examination survey is ongoing assess includes from blood urine samples collected people participating addition included for measured during time period information deficiencies found less than had selected however most varied by age gender or race ethnicity could be as high nearly one third certain groups example non hispanic black mexican american were more likely vitamin d deficient compared white graph shows prevalence estimates among who live all e g year nutrients listed...