Methylation is an important process that happens within your body. It has numerous effects that extend throughout the body, and methylation helps to synthesize enzymes, hormones, vitamins, and other agents that help the body to run at its peak efficiency. As your body ages it generally has trouble maintaining proper methylation, and this can cause a number of negative side effects. Dimethylglycine, or DMG, is a methyl donor, and it can support healthy methylation.