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Folate and neural tube defects. Recommendations from a Danish working group
L B Rasmussen1, N L Andersen, G Andersson
1Danish Veterinary and Food Administration, Søborg.
Danish Medical Bulletin
|May 20, 1998
Summary
Increasing folate intake in Danish women can significantly reduce the risk of neural tube defects (NTDs). Early dietary changes and folic acid supplementation are crucial for preventing these birth defects.
Area of Science:
- Public Health
- Nutritional Science
- Obstetrics
Background:
- Neural tube defects (NTDs) like spina bifida affect approximately 1.4 per 1,000 pregnancies in Denmark.
- Folate, a B-vitamin, plays a critical role in preventing NTDs, as evidenced by numerous case-control and randomized studies.
Purpose of the Study:
- To evaluate the necessity of increased folate intake among Danish women to reduce NTD incidence.
- To provide recommendations for folate supplementation and dietary intake for women of childbearing age in Denmark.
Main Methods:
- Review of existing case-control and randomized studies on folic acid supplementation and NTD risk.
- Analysis of dietary folate intake studies in relation to NTD occurrence.
- Working group evaluation and formulation of public health recommendations.
Main Results:
- Periconceptional folic acid supplementation (360 mcg to 4 mg daily) demonstrably decreases NTD recurrence rates.
- Higher dietary folate intake is associated with a lower risk of NTDs.
- Increased folate intake through diet, supplements, or food fortification can lower NTD incidence in Denmark.
Conclusions:
- An increase in folate intake among fertile Danish women is essential for reducing NTD rates.
- Dietary counseling is recommended for all women planning pregnancy.
- Specific folic acid supplement dosages are recommended based on individual risk factors, including a history of NTDs.