review found only a small stroke-related benefit signal for homocysteine-lowering B vitamins, while results varied by trial and population.
That means seniors should not assume that high-dose B vitamins automatically protect the brain or heart.
Why High-Dose Folic Acid Can Be a Problem
Folic acid is not “bad.” It is essential in the right context. But high intake can be risky when it hides or complicates another issue: vitamin B12 deficiency.
This matters because B12 deficiency is more common in older adults and can cause neurological symptoms such as numbness,
