The science behind DNA methylation At the heart of our cells lies DNA, a blueprint that guides almost every process in our body. DNA methylation is a natural mechanism where small chemical markers, called methyl groups, attach to DNA. These markers don’t change the DNA sequence itself, but they influence how genes are expressed. Essentially telling genes when to turn on or off. Over time, the patterns of methylation in our DNA evolve, and researchers have discovered that these patterns are closely linked to aging and overall health. Think of DNA methylation as a series of annotations in a massive…