Does folate/ L-methylfolate supplementation DECREASE or INCREASE the risk of breast cancer?

Mental health clinicians sometimes recommend L-methylfolate to their patients. The dose used is much higher than the equivalent “recommended daily allowance” of folates in the diet. Taking L-methylfolate for the long term is often recommended based on genetic variations rather than on actual clinical trial data. Could giving high-dose L-methylfolate for many years either decrease…