Is folic acid linked to develompent of cancer?

No: It's a vitamin that you need. There's a lot of disinformation about it. If your diet is reasonably mainstream and includes some green leafy vegetables, don't bother to supplement. If not, consider it especially if you have a low folate (folic acid) blood assay. The idea it will give you cancer is contrary to what we know of basic biology.

No not really: Folic acid has some cancer preventive effects. So it is a good vitamin to take especially by women who like to have a alcoholic drink which has some risk to cause breast cancer /Colon cancer.