Ingredients of the Human Body
You are 68% air humans…
Stars cook up nearly all of the approximately 60 atomic elements in people’s bodies, but exactly how that works remains a mystery.
The results of scientific studies indicate that crucial elements in people formed later in the history of the universe than many had expected, says David Jones, the lead astronomer on the Hubble study. “It took (very roughly) about 750 million years longer to form the first 50 percent of the iron in the modern universe.”