FuzzyBot: Importing a new version from external source

2024-04-05T11:15:35Z

Importing a new version from external source

New page

===Pregnancy, lactation and early childhood===
The U.S. [[Dietary Reference Intake|Recommended Dietary Allowance (RDA)]] for pregnancy is {{value|2.6|u=µg/day}}, for lactation {{value|2.8|u=µg/day}}. Determination of these values was based on an RDA of {{value|2.4|u=µg/day}} for non-pregnant women, plus what will be transferred to the fetus during pregnancy and what will be delivered in breast milk. However, looking at the same scientific evidence, the [[European Food Safety Authority]] (EFSA) sets adequate intake (AI) at {{value|4.5|u=μg/day}} for pregnancy and {{value|5.0|u=μg/day}} for lactation. Low maternal vitamin B<sub>12</sub>, defined as serum concentration less than 148 pmol/L, increases the risk of miscarriage, preterm birth and newborn low birth weight.During pregnancy the [[placenta]] concentrates B<sub>12</sub>, so that newborn infants have a higher serum concentration than their mothers. As it is recently absorbed vitamin content that more effectively reaches the placenta, the vitamin consumed by the mother-to-be is more important than that contained in her liver tissue.

Translations:Vitamin B12/22/en - Revision history

FuzzyBot: Importing a new version from external source