Does Your Body Really Replace Itself Every 7 Years?

Feb 04, 2019 · Cells that make up your skin are replaced every two to three weeks. As the main protection against the environment, your skin needs to be in top shape. Red blood cells, meanwhile, last for about four months. White blood cells, the main players in fighting infections, can last from a few days to a little over a week.…

WATCH: Does Your Body Really Regenerate Itself Every 7 Years?

Jun 03, 2016 · Your skin cells are being cycled through every few days, but are fully replaced every few weeks - maybe this time with no pimples?  And speaking of gross infected things, white blood cells called neutrophils are some of the first responders of your immune system, and they only last a few hours before dying and ending up as puss on your wound.…