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Oral vitamins can only lead to about 30 percent absorption rate, which isnt ideal for individuals who arent getting enough vitamins as it is

Dietary supplements are not a substitute for a varied and balanced diet

Peer review Peer review information Nature Communications thanks Rudolf Oehler, Robert Hoffman and the other, anonymous, reviewer(s) for their contribution to the peer review of this work

Concomitant deficiencies (iron, folate), chronic illness, or drug interactions may blunt clinical response and warrant further evaluation

Adherence to specialized diets is often a difficult and frustrating endeavor for patients and their families