Eating good whole food or taking a nutrient you may not be producing properly seems like a no brainer to me, especially if it will improve your health outcome. The JAMA 2015 study Folate Supplements for Stroke Prevention randomized 20,702 people who had hypertension to an enalapril group or an enalapril with 0.8 mg folate group.
The researchers ended the study early because they found that the group taking enalapril with folate had a significant reduction in strokes – 2.7% taking folate versus 3.4% no folate.