Moms of Twins Lifespan

At first I thought this might be an advantage for people who have twins. However, if you read on, you will see it is not actually healthier to have twins. Bummer! Those moms could use a break! I had a had time with one baby. I don't know how I could have functioned with two little ones!
FROM NBC: Women who give birth to twins live longer when compared with other mothers. Researchers at the University of Utah collected data on over 58-thousand women born in the 1800's -- who delivered at least one child.
Twin moms' annual risk of dying after menopause was seven-point-six percent lower than women who had one child at a time. These findings don't mean that it's healthier to have twins, but that healthier women have a better chance of delivering twins. So many women now conceive twins through fertility treatments -- but it's not yet clear how that affects their health and mortality.