TY - JOUR
T1 - Scientific Opinion on dietary reference values for cobalamin (vitamin B12)
AU - Tetens, Inge
AU - Sjödin, Anders Mikael
AU - EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA)
N1 - European Food Safety Authority (EFSA), Parma, Italy.
PY - 2015/7/1
Y1 - 2015/7/1
N2 - Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) derived Dietary Reference Values (DRVs) for cobalamin (vitamin B12). The Panel considers that the approach based on a combination of biomarkers of cobalamin status, i.e. serum cobalamin, holotranscobalamin (holoTC), methylmalonic acid (MMA) and plasma total homocysteine (tHcy), is the most suitable approach to derive DRVs for cobalamin. The Panel notes the uncertainties with respect to cut-off values for cobalamin insufficiency of these indicators and that an Average Requirement (AR) cannot be determined from the limited data available. There is consistent evidence in adults that a cobalamin intake of 4 μg/day and greater is associated with serum concentrations of holoTC and cobalamin within the reference ranges derived from healthy subjects, together with MMA and tHcy concentrations below the cut-off values for adults, which indicates an adequate cobalamin status. Therefore, the Panel sets an Adequate Intake (AI) for cobalamin at 4 μg/day for adults based on data on different biomarkers of cobalamin status and in consideration of observed mean intakes, which range between 4.2 and 8.6 μg/day in adults in several EU countries. AIs for infants and children are calculated by extrapolation from the AI for adults using allometric scaling and applying a growth factor. Estimated AIs range from 1.5 μg/day in infants aged 7–11 months to 4 μg/day in children aged 15–17 years. For pregnancy and lactation, additional cobalamin intakes related to the accumulation of cobalamin in fetal tissues and transfer of cobalamin into breast milk are considered and AIs of 4.5 and 5 μg/day, respectively, are proposed.
AB - Following a request from the European Commission, the EFSA Panel on Dietetic Products, Nutrition and Allergies (NDA) derived Dietary Reference Values (DRVs) for cobalamin (vitamin B12). The Panel considers that the approach based on a combination of biomarkers of cobalamin status, i.e. serum cobalamin, holotranscobalamin (holoTC), methylmalonic acid (MMA) and plasma total homocysteine (tHcy), is the most suitable approach to derive DRVs for cobalamin. The Panel notes the uncertainties with respect to cut-off values for cobalamin insufficiency of these indicators and that an Average Requirement (AR) cannot be determined from the limited data available. There is consistent evidence in adults that a cobalamin intake of 4 μg/day and greater is associated with serum concentrations of holoTC and cobalamin within the reference ranges derived from healthy subjects, together with MMA and tHcy concentrations below the cut-off values for adults, which indicates an adequate cobalamin status. Therefore, the Panel sets an Adequate Intake (AI) for cobalamin at 4 μg/day for adults based on data on different biomarkers of cobalamin status and in consideration of observed mean intakes, which range between 4.2 and 8.6 μg/day in adults in several EU countries. AIs for infants and children are calculated by extrapolation from the AI for adults using allometric scaling and applying a growth factor. Estimated AIs range from 1.5 μg/day in infants aged 7–11 months to 4 μg/day in children aged 15–17 years. For pregnancy and lactation, additional cobalamin intakes related to the accumulation of cobalamin in fetal tissues and transfer of cobalamin into breast milk are considered and AIs of 4.5 and 5 μg/day, respectively, are proposed.
KW - Faculty of Science
KW - Cobalamin
KW - Vitamin B12
KW - Adequate intake
KW - Dietary reference value
U2 - 10.2903/j.efsa.2015.4150
DO - 10.2903/j.efsa.2015.4150
M3 - Journal article
SN - 1831-4732
VL - 13
JO - E F S A Journal
JF - E F S A Journal
IS - 7
M1 - 4150
ER -