The systematic evaluate revealed in Reproductive Well being suggests there may be “scarce adherence” to folic acid tips, highlighting an “pressing have to standardize the suggestions throughout European international locations.”
The researchers on the College of Pavia, ICS Maugeri and Haleon Italy S.R.L. advocate monitoring obese girls of childbearing age and assessing markers for folate and homocysteine metabolism to allow customized supplementation.
“These enhancements ought to be supported by instructional insurance policies involving cooperation amongst healthcare professionals, medical medical doctors, policymakers and residents to reinforce consciousness amongst girls of childbearing age about their pivotal function in supporting well being throughout generations,” they wrote.
Weight problems and neural tube defects
Research signifies that overweight pregnant girls are at considerably greater danger of neural tube defects corresponding to spina bifida in contrast with girls of regular weight.
The present examine famous that ladies with weight problems “could have a decrease folate stage attributable to a state of continual low-grade irritation, which ends up in an elevated metabolic requirement.”
Older evidence means that though overweight people present decrease serum folate ranges, their pink blood cell concentrations are greater. The present researchers famous that this “weight problems paradox” could also be as a consequence of elevated exercise of the cytochrome P450 (CYP) 2E1 enzyme, which makes use of folic acid as a substrate.
“For these susceptible girls, a better dose of 5 mg of FA is advisable by the World Well being Group tips,” the researchers wrote.

Meals fortification
The present systematic evaluate included research from European international locations that adhered to a coverage of voluntary folic acid fortification. The authors famous that necessary fortification in the USA “has demonstrated a discount in NTDs [neural tube defects] incidence by 25–30%, roughly 50% of the preventable fraction with folic acid.”
“This examine additional proves the pressing want for European international locations to contemplate requiring the fortification of staple meals with folic acid,” Scott Montgomery, director of the Meals Fortification Initiative, instructed Nutraingredients.
“As a result of the neural tube varieties within the first weeks of being pregnant, usually earlier than a girl is aware of she is pregnant, counting on supplementation alone isn’t an efficient strategy to stop neural tube defects.”
“Folic acid fortification, practiced in additional than 60 high-, middle- and low-income international locations, is a confirmed, protected means to make sure all girls get sufficient folate to assist stop start defects,” he added.
Research particulars
Of 1,718 data recognized, the systematic evaluate included eight research of obese pregnant girls who took folic acid.
In three research, girls took folic acid previous to conception, and the remaining took the complement ranging from the primary trimester.
The outcomes revealed that between 4% and 9.5% of girls with weight problems adhered to folic acid suggestions. The researchers famous that 61% began the supplementation after conception, “highlighting that European pregnant girls usually are not notably adherent to suggestions through the interval of biggest want.”
Supply: Reprod Well being, 22, 13. doi: 10.1186/s12978-025-01953-y. “Folic acid supplementation in European girls of reproductive age and through being pregnant with extreme weight: a scientific evaluate”. Authors: F. Loperfido et al.