Add a few letters and you can likely guess what some call this gene. So, what is MTHFR? The MTHFR gene is the most well studied gene in regards to health. Methylenetetrahydrofolate reductase (MTHFR) is an enzyme produced by the MTHFR gene, hence, the name. Before we dive deeper into the significance of MTHFR, let’s first briefly discuss methylation.

Methylation is a key process that affects your stress response, inflammation, brain chemistry, energy production, immune response, detoxification, antioxidant production, cell repair, and genetic expression.