Newswise — According to a newly released report by the CDC, the birth of twins reached an all-time record number in 2014. 2014 saw 33.9 sets of twins per 1,000 births, versus 33.7 in 2013. It is believed that the increase is due to the increase in birth rates for older women. Scientist believe older women are actually more likely to have twins. They are also more likely to use IVF fertilization to conceive.

As reported in the Washington Post on December 28, 2015.