Liver regeneratesLife science/shutterstock
The liver is the organ best at regenerating itself. Instead of scarring over damaged tissue like most organs, the liver can replace those old cells with new ones to heal. The process is quick, too. Even after 70 percent of the liver is removed, it can regenerate within two weeks. Check out these other 20 obscure facts about the human body.
Intestines regenerate their liningyodiyim/shutterstock
Every day, your small and large intestines do heavy-duty work digesting food. The epithelium in the intestines acts as a barrier, filtering out toxins while absorbing nutrients. Without it, germs could enter the intestine and make you sick. To keep itself strong, the body sheds old epithelium cells and replaces them with new ones. The turnover rate is quick; it’s fully regenerated every five to seven days. Don’t miss these other 15 incredible things your body does every minute.