Guideline / position statementindependent cross-checkabstract only checked I-SUP-03 standard review
USPSTF: folic acid before pregnancy
Folic Acid Supplementation to Prevent Neural Tube Defects: US Preventive Services Task Force Reaffirmation Recommendation Statement.
Overview
US Preventive Services Task Force et al.. JAMA 2023 · PMID 37526713 · DOI 10.1001/jama.2023.12876
All who could become pregnant should take 400–800 µg folic acid daily (grade A).
Does the study support the specific claim? No · Methodological quality: high
Plain-language summary
Study explained simply
- What did the researchers want to find out?
NTD prevention.
- How was the study done?
Guideline.
- What was actually found?
Grade A.
- What do the results mean in everyday life?
Clear indication for a supplement.
- What does it say about Elawady's specific claim?
Contradicts C-SUP-10.
- Do the results apply to Germany and Europe?
Applicable.
Scientific in-depth review
1. Full reference
- Authors
- US Preventive Services Task Force et al.
- Journal
- JAMA
- Year
- 2023
- Identifier
- PMID 37526713 DOI 10.1001/jama.2023.12876
- Verification
- verified – PubMed efetch 2026-10-25
- Retracted
- no
- Corrections
- none
- Extent checked
- abstract only
- Conflicts of interest and funding
not stated in abstract
2. Research question
Folic acid supplementation to prevent NTDs
3. Study design and population
- Study design
- Guideline / position statement – Recommendation statement (USPSTF reaffirmation)
- Population
Persons planning or able to become pregnant
- Country
USA
- Period
2023
4. Methods and endpoints
- Exposure / intervention
Folic acid 0.4–0.8 mg/day
- Endpoints
NTDs
- Statistical methods
USPSTF grading
5. Actual results
- Results
High certainty of substantial net benefit; recommends daily 0.4–0.8 mg folic acid (A recommendation).
- Absolute risks
not applicable
- Authors' conclusion
Grade A.
6. Strengths
- Authoritative
7. Weaknesses
- US context
8. Risk of bias
- Orienting tool
- none applicable
- Type of assessment
- simplified assessment (abstract only)
- Full formal assessment
- no
- Overall risk of bias
- not assessable
- Rationale
Guideline.
9. Assessment of the statistical interpretation
10. Relevance to the specific claim
11. Independent contrary findings
12. Transferability to Germany and Europe
Consistent with European recommendations.
13. Overall methodological judgement
Strongest recommendation grade.
| Multidimensional assessment | |
|---|---|
| Authenticity of the source | verified |
| Methodological quality | high |
| Risk of bias | not assessable |
| Precision of results | not applicable |
| Directness | direct |
| Reproducibility | replicated |
| Consistency with the overall evidence | consistent |
| Regional transferability | high |
| Adequacy of the interpretation (by the archive) | not applicable |
14. Open questions
15. Linked fact checks
- No one needs vitamins or supplements: 'there is no such thing as dietary supplements', the body makes its own vitamins, and vitamins are on the forbidden list. – Studies contradicting or limiting the claim