98% of the 7 billion billion billion atoms in the human body are replaced every year.
How Many Atoms Are Replaced a Year?
There was a study done at Oak Ridge Lab. by Paul C. Aebersold in 1953 that found that 98 percent of all the atoms in a person’s body change out every year, and that within five years all the atoms had changed.How Many Atoms Are in a Human Body?
A human’s body weighing 154 pounds (70 kilograms) is comprised of 7 billion billion billion atoms. To be clear, that’s a 7 followed by 27 zeros!