Key Findings: Population Red Blood Cell Folate Concentrations for the Prevention of Neural Tube Defects
British Medical Journal has published a new study about the association between the amount of folate in women’s blood (“blood folate concentrations”) and the risk of having a baby affected by a neural tube defect, such as spina bifida or anencephaly. In this study, CDC researchers and other scientists found that blood folate concentrations can predict the risk of neural tube defects in a population. These findings will be useful for public health officials interested in understanding the risk of folate-sensitive neural tube defects in their communities and planning prevention programs. You can read the article’s abstract here.
About This Article
This study uses data from two large studies and applies a mathematical model to describe the relationship between women’s blood folate concentrations and the risk of having a baby affected by a neural tube defect.
Main Findings From This Article
Through mathematical modeling of information collected from two large studies in China, this study shows a link between blood folate concentrations in early pregnancy and the risk of neural tube defects. A similar relationship was found in a previous study conducted in an Irish population, and together the results suggest that blood folate concentrations can reasonably predict neural tube defect risk in other populations.
This study found:
- Lower blood folate concentrations are associated with a higher risk of neural tube defects.
- For the prevention of neural tube defects, the optimal blood folate concentration within a population is 1000 nanomoles per liter (nmol/L) or greater.
- Blood folate concentrations alone (without having information on folate intake or other factors) can be used as a tool to determine the need for and the effectiveness of neural tube defects prevention programs, such as the fortification of staple foods with folic acid.
Crider KS, Devine O, Hao L, Dowling NF, Li S, Molloy AM, Li Z, Zhu J, Berry RJ. Population Red Blood Cell Folate Concentrations for the Prevention of Neural Tube Defects: A Bayesian Model. Brit Med J. 2014 [epub ahead of print].
Neural Tube Defects: Centers for Disease Control and Prevention (CDC) Activities
CDC’s National Center on Birth Defects and Developmental Disabilities is working with the World Health Organization and other partners on a global initiative, Birth Defects COUNT (Countries and Organizations United for Neural Tube Defects Prevention), to reduce death and lifelong disability due to neural tube defects. The three focus areas of Birth Defects COUNT are science, partnerships, and public health policy.
- Science. Develop and strengthen regional and in-country abilities to monitor birth defects, as well as develop and strengthen laboratory capacity to measure the amount of folate present in the blood (or blood folate concentration).
- Partnership. Engage a global network of partners who are experts in conducting birth defects prevention programs, tracking birth defects rates, monitoring blood folate concentrations, and developing interventions to increase the amount of folic acid consumed by women of childbearing age.
- Policy. Educate and inform decision makers on the benefits of fortification policies for preventing neural tube defects.
CDC’s activities support United Nations Millennium Development Goal 4, to reduce the mortality rate of children under-five, and improve global efforts to prevent neural tube defects.