All the atoms in your body are ~14 billion years old. I could equally say all of the protons or neutrons or electrons in your body are ~14 billion years old because all matter was created when the universe was created from nothing ~14 billion years ago. Since that time it has only changed form, dummy.
"Atoms" obviously differ from "protons or neutrons or electrons" and even silly Einstein would tell you all can be converted to energy, and possibly back into new matter. Much of it is every day. "E=mc^2" Give it up. Admit you have nothing to offer but tiresome BS and rancid copypasta.