Factors Contributing to the High Prevalence of Vitamin B6 Deficiency in US: A Systematic Review

Abstract

Most studies collected B6 intake information through the dietary recall method. Among healthy populations over 1-year-old from different countries, women (especially those with restricted energy intake) and older adults tended to have lower intake than RDA and thus experienced a higher incidence of deficiency. About half of the nursing home residents showed B6 deficiency.