“If it's true that every seven years each cell in your body dies and is replaced, then I have truly inherited my life from a dead man; and the misdeeds of those times have been forgiven, and are buried with his bones.”

“Every single cell in the human body replaces itself over a period of seven years. That means there's not even the smallest part of you now that was part of you seven years ago.”

“Every seven years our bodies change, every cell. Every seven years, we disappear.”

“Love lasts about seven years. That's how long it takes for the cells of the body to totally replace themselves.”

“I actually plan to mess up my life and start over every seven years. That way, I’ll never get in a rut. I read somewhere that most of your cells only live about seven years anyway, so in theory you literally are a new person; I figure that’s the best time to start over.”

“The (cancer) cells, technically speaking, are immortals. The woman from whose body they were once taken has been dead for thirty years”