Pre- and postnatal health: evidence of increased choline needs.
Level 5 - mechanism / opinion, no new human data
Narrative review synthesizing physiological mechanisms, animal research, and expert intake guidelines without primary human trial data.
PubMed 20656095 · doi:10.1016/j.jada.2010.05.009
What was done
This is a narrative review evaluating pre- and postnatal physiological requirements for choline, dietary Adequate Intake recommendations, and maternal intake levels synthesized from animal, biomarker, and observational data.
What was found
Adequate Intake levels are established at 425 mg/day for adult women, increasing to 450 mg/day during pregnancy and 550 mg/day during lactation. Human neonates have blood choline levels three times higher than maternal concentrations, substantial choline is present in human milk, and pregnancy causes hepatic choline depletion in rats on normal diets. Exact human requirements remain unknown, most pregnant women do not meet target intakes, common genetic variants may further raise requirements, and most prenatal vitamins omit choline.
Why it matters
Choline is critical for fetal brain development, neural tube closure, and cognition, but maternal intake frequently falls short and standard prenatal supplements rarely provide it.
Limits
As a narrative review, it presents no systematic search methodology, meta-analysis, or primary clinical trial data. Evidence cited relies partly on rodent models, biomarker comparisons, and observational estimates, and absolute human physiological requirements are not definitively established.
Cited by
- supports The recommended dietary intake of choline for pregnant women is approximately 450 milligrams per day.