For example, recent research shows that folic acid helps prevent neural tube defects (including spina bifida) from occurring during the earliest stages of fetal development — so it's important to consume plenty of it before you become pregnant and during the early weeks of your pregnancy.
Por ejemplo, estudios recientes indican que el ácido fólico ayuda a prevenir que ocurran defectos del tubo neural (incluyendo la espina bífida) durante las primeras etapas del desarrollo del feto y durante las primeras semanas de embarazo.