Hi Leila and francij1.
As I fear PCa recurrence and heart attacks. I have done hours of research on folate, and folic acid, natural, synthetic, as dietary and vitamin supplements.
There is very little research on how it may affect PCa. There was research in 2013 which showed it does not effect PCa cancer recurrence after definitive treatments:
Results suggest that the consumption of foods and multivitamins that contain folate is not associated with prostate cancer progression after definitive treatment.
https://pmc.ncbi.nlm.nih.gov/articles/PMC5480381/
The evidence that very excessive levels of folic acids could increase the risk of getting PCa, is inconclusive.
Liver overload of folic acid can create problems and in very rare circumstances to men with specific genes increase the division rate of rare types of highly aggressive cancers.
All these possible side effects are usually linked to excessive folic acid usually in vitamin supplement tablet form.
I have a heart stent. Apparently folic acid and other B vitamins were once recommended to help keep the stents clear and prevent vascular restenosis. However years later, research showed that too much folic acid can in fact slightly increase that problem:
Contrary to previous findings, the administration of folate, vitamin B6, and vitamin B12 after coronary stenting may increase the risk of in-stent restenosis and the need for target-vessel revascularization.
https://pubmed.ncbi.nlm.nih.gov/15215483/
From what I've learned, I won't be taking any folic acid supplements, but I'm not concerned about it being added as a dietary supplement.
This is a interesting link to a recent article on folic acid and PCa. It mentions some of the research I've referred to.
https://sperlingprostatecenter.com/folate-folic-acid-and-your-prostate/
Edited by member 24 Oct 2026 at 10:58
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