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.
Sperm and eggs are sex cells. Meiosis is the start of the process of how a baby grows. Normally, meiosis causes each parent to give 23 chromosomes to a pregnancy. When a sperm fertilizes an egg, the union leads to a baby with 46 chromosomes. But if meiosis doesnât happen normally, a baby may have an extra chromosome (trisomy), or have a missing chromosome (monosomy).