More than one-in-10 people living in the USA are deficient in vitamin B6 whether or not they take dietary supplements, according to a new study published in the American Journal of Clinical Nutrition.
Researchers from Tufts University, Boston, analyzed blood samples from 7,822 people of all ages down to one year old. They measured blood levels of pyridoxal 5'-phosphate, the biologically-active form of B6.
They found that 11% of those taking B6 supplements had PLP levels indicating deficiency and 25% of those not taking supplements were also deficient.
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