If you've been following the health and wellness scene at all in recent years, you've likely heard about MTHFR, even if you've never heard of the gene by that name. MTHFR is an abbreviation for methylenetetrahydrofolate reductase, an enzyme that plays a key role in converting folic acid into folinic acid and methionine, two chemicals used throughout the body. Folic acid is the synthetic form of folate, which is naturally found in foods. While...