No, it's not text shorthand for a swear word... MTHFR stands for methylenetetrahydrofolate reductase. Wonderful! But what is it? It's a gene, more specifically a genetic mutation. And I have it! MTHFR gene is responsible for the methylation or processing of amino acids (component parts of proteins) within the body. Specifically, it is responsible for … Continue reading MTHFR