Methods Major online databases, namely PubMed, Scopus, and Web of Science, were searched up to April 24, 2015 using the following terms: folate, polymorphisms, gene variant, genetic variant, homocysteine, congenital heart defects, and Down syndrome. Only peer-reviewed case-control studies showing demographic data of case and control mothers, and tabular data of allele and genotype frequencies, have been considered for this review and included in Tables 1, 3, 4
However, a Glutathione supplement can complement a diet rich with nutritious foods and now comes in many forms
No consistent serious adverse events have emerged in limited case series
Glossary of Key Terms All reference links valid and accessible on 30 June 2026 5