Folate, also named vitamin B9, is a naturally occurring nutrient and is found in many foods including fruits, vegetables legumes, cereals, and liver. Human can’t produce folate de novo and need to uptake folate from dietary intake. Evidences implicated deficient folate is related to increased risks of many cancers [1].
http://www.impactjournals.com/oncotarget/index.php?journal=oncotarget&page=article&op=view&path[]=18775&path[]=60300
Associations between dietary folate intake and risks of esophageal, gastric and pancreatic cancers: an overall and dose-response meta-analysis