Does your body really replace itself every seven years?

Lots More Information

Author's Note: Does your body really replace itself every 7 years?

Goodbye cerebral cortex, I'm pretty sure I've lost the capacity to think. Like Elvis, my brain cells appear to have left the building. I spent a solid half an hour scouring my apartment for my wallet this morning. I checked all the usual targets – various tables and night stands – until I recalled that the last time I remembered having it was at the grocery store. So I opened the fridge and there was my cash, right between the milk and the eggs.

Related Articles


  • Epstein, Angela. "Believe it or not, your lungs are six weeks old - and your taste buds just ten days! So how old is the rest of your body?" The Daily Mail. Oct. 13, 2009. (June 3, 2014)
  • Northrup, Christiane. "Flourishing: Why a Healthier Mind Means Healthier Cells." The Dr. Oz Show. April 3, 2012. (June 3, 2014)
  • NPR. "Atomic Tune-Up: How the Body Rejuvenates Itself." July 14, 2007. (June 3, 2014)
  • Science Update. "Bombs and Brain Cells." June 24, 2013. (June 3, 2014)
  • Stanford University School of Medicine. "Advancing Cancer Treatment." (June 3, 2014)
  • 3, 2014)
  • Wade, Nicholas. "Your Body is Younger Than You Think." The New York Times. Aug. 2, 2005. (June 3, 2014)