There's a protein in your genes called telomerase, which makes random assortments of letters on the end of each of your genes, so that when they duplicate, they don't lose any important genetic information. Only nonsensical letters, called telomeres. Each gene only has a limited number of telomeres, so, after a while, when all the telomeres are used up, each time a gene is duplicated, it loses a bit of information and the cells in your body bnegin to deteriorate.
Yeah, so blame the telomeres.
''We should be penguin poachers. We raid penguin farms to make super special chocolate Penguin FFFCHWWW Milk. Then after the milk harvest we can keep the penguins as our pets. DANK shit if you ask me.'' -FreshCoast