If you have already had a set of natural fraternal twins or multiples, then your chances of having another set of fraternal twins or multiples has greatly increased!

Lets take a quick look at the numbers:

- Chance of having fraternal natural twins is about 1 in 90.
- Chance of having fraternal twins with fertility drugs is about 1 in 35.
- Chance of having identical twins is about 1 in 250.
- Chance of having triplets is about 1 in 8,100.
- Chance of having triplets with fertility drugs is about 1 in 700

Using fertility treatment boosts your odds to a staggering 1 in 3!

## Second time around

Ok so you have already won the "Twin Parent lottery" once. What are the odds of you having a second set of twins?

- If your first set of twins were fraternal, then your chances of having another set of fraternal twins is multiplied by four! That's 1 in 12!
- If your first set of twins were identical, then your chances of having another set of identical twins drops way down to 1 in 70,000 or so.
- If you are using fertility treatment, then the chances are the same as with your first set of twins.

## Other factors that can increase the odds of multiples

There are many other factors that can increase your odds of having twins or multiples. Some of them are:

- Your age. If you are over 50, then your chances of having twins increases to 1 in 9.
- Your mother or grandmother is a fraternal twin. Studies have shown that if your mother is a fraternal twin, your chances of having fraternal twins might be has high as 1 in 17.
- Your weight. Studies have shown that women with a body mass index of 30 or more have a significantly increased chance of having fraternal twins.

*Statistics gathered from multiple sources including; 2005 study published by the American College of Obstetrics and Gynecology report from the Centers for Disease Control and Prevention and the Center for Disease Control*

Categories: