AI Article Synopsis
- Maternal intake of pickled vegetables is linked to a higher risk of neural tube defects (NTDs) in offspring, according to a study in Shanxi Province, China.
- The study included 519 cases of NTDs and 694 healthy controls, examining dietary habits shortly after delivery and using statistical models to assess risk factors.
- Results showed that more frequent consumption of pickled vegetables significantly increased NTD risk, while higher meat and egg/milk consumption appeared to offer protective effects.
Article Abstract
Background: Maternal exposure to nitrate, nitrite, and N-nitroso compounds from drinking water or diet has been associated with an increased risk of neural tube defects (NTDs) in some studies. Pickled vegetables contain relatively large amounts of nitrite and N-nitroso compounds. We examined the association between maternal periconceptional consumption of pickled vegetables and NTDs in Shanxi Province of northern China.
Methods: Data were derived from a population based case-control study of major external birth defects in four counties of Shanxi Province. Participants included 519 NTDs cases identified between 2003 and 2007 and 694 healthy controls. Exposure information was collected within 1 week after delivery. Multivariable non-conditional Logistic regression model was used to estimate the adjusted odds ratio (OR) controlling for potential confounding variables.
Results: The risk of NTDs was positively associated with the frequency of the consumption of pickled vegetables by the mother. Compared with pickled vegetables consumption at < 1 meal/week, the adjusted OR for consumption at 1 - 3, 4 - 6, and > 6 meals/week were 1.3 (95% confidence interval (CI): 1.0, 1.8), 1.9 (1.1, 3.2), and 3.6 (1.9, 6.9), respectively. A protective effect was found for maternal meat consumption at ≥ 1 meal/week (adjusted OR: 0.6, 95%CI: 0.4, 0.7) and egg or milk consumption at ≥ 1 meal/week (adjusted OR: 0.6, 95%CI: 0.4, 0.8).
Conclusion: Maternal periconceptional consumption of pickled vegetables may increase the risk for NTDs in Shanxi Province.
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