You should have a colonoscopy every 10 years starting at age 50. Alternatively, you may get a flexible sigmoidoscopy every five years, a double-contrast barium enema every five years or a CT colonography (virtual colonoscopy) every five years. However, a colonoscopy will be needed if any of those results are positive.
Jena Pincott explains that even after a mother gives birth, her babyâs cells remain inside her body â and work tiny wonders. In an excerpt from her book Do Chocolate Lovers Have Sweeter Babies?, Pincott explains that pregnancy is really only the beginning for mother and baby cell-sharing.
(Learn more about the human body.) Previous research had suggested that a woman is born with all the egg cells she will ever have in her lifetime. But in recent experiments, scientists discovered a new type of stem cell in the ovaries thatâwhen grown in the labâgenerates immature egg cells.