B12 Deficiency

B12 deficiency is a true silent epidemic and when left untreated it can lead to very serious consequences. Regular B12 blood serum test might trick you as you can be deficient on a cellular level and still your serum levels are showing either end quarter of normal range or over the normal range and if you have such results and you weren't supplementing, it can be an indicator that you might have some gene mutation/s and the first one to be investigated in this case is the MTHFR mutation.