Peter Attia· MD
these chemicals these chemical modifications are really important because they affect things like gene expression um they're um it's it's it's one of the more important classes of something that's called epigenetics which is um Chang that are outside of the genetics or outside of the code itself you know um as you know the uh the DNA code is the same in most cells of the human body but obviously the cells are quite different so a t- cell is very different than a neuron um and other than the t- cell receptor all of the the genes are the same right the code is the same so why are the cells different well it's the epigenetics so so things like which um parts of the gene are methylated or which ones are assoc assciated with histones that are um kind of blocking access to the DNA that that's what ultimately determines which genes are transcribed um which proteins are made and why cells take on very different morphology and properties right so it's it's the methylation is a very fundamental code um for controlling it