Methylation – the addition of a methyl group (one carbon atom attached to three hydrogen atoms) to another molecule – is an essential and vital biochemical process that is involved in multiple biochemical pathways involving neurotransmitter synthesis, detoxification, cardiovascular health, eye health, muscle health, bone health, and redox balance. This genetic anomaly poses a significant challenge to efficient methylation – and creates an important need for nutritional support to help rectify it.