PrivateBlogWhat boosts the chances of having twins?

What boosts the chances of having twins?

By Cryos | 7/3/2019
Pregnant woman thinking about what boosts the chances of having twins

The thought of having twins is a dream to some – to others too much of a good thing. If you belong to the first category and love the idea of having two toddlers, you should read along. We have gathered a list of things which might influence the chances of having twin babies. 

  • If the woman is over 35 years
  • Having a high BMI
  • Hereditary factors
  • Having fertility treatment
  • Some races have higher chances of falling pregnant with twins

1. If the woman is over 35 years

Age has an influence on your chances of becoming pregnant with fraternal (non-identical) twins. The older you are, the higher are the odds of having twins. Studies show that it is more common for women over 35 years of age than for younger women to have twins. This is due to increased production of the hormone FSH which may lead to the release of multiple eggs.

2. A high BMI can increase the chances of having twins

Having a higher BMI (Body Mass Index) over 30 has been linked to increased chances of having a twin pregnancy, according to previous studies. However, having a BMI over 30 is not recommended as this places the woman in the category of obesity, which is not healthy.  

3. Hereditary factors

A twin pregnancy can also be dependent on your family history. The ability to conceive more than one egg is hereditary. This means that if your mother is a twin or you are a twin yourself, your chances of releasing more than one egg to be fertilized will be higher. However, this does not apply for having identical twins which are not affected by hereditary conditions.

What boosts the chances of having twins?

Fertility treatment can lead to a twin pregnancy if more than one embryo is transferred to the uterus during IVF treatment.

4. Having fertility treatment

Fertility treatment can boost the chances of having fraternal twins. If you take fertility drugs, for example before IUI treatment, which stimulate the ovaries, the chances of releasing more than one egg each month are higher. In some cases, in vitro fertilization (IVF) can also lead to having twins, if more than one embryo is inserted into the uterus. Though, today it is most common for fertility clinics to insert only one embryo in an IVF treatment.

5. Some races have higher chances of having twins

Statistics show that African-American women are most likely to have twins. Asian and Latin American women are the least likely to fall pregnant with two babies.

What about identical twins?

A pregnancy with fraternal twins is a result of the woman releasing two eggs that are fertilized at the same time. Falling pregnant with identical twins, on the other hand, is due to one fertilized egg splitting in two at a very early stage. This means that the two babies will have the same set of DNA and they will, therefore, be genetically identical. 

An ultrasound showing twins

Fraternal twins can be caused by hereditary factors, age and race, identical twins is coincidental.

While becoming pregnant with fraternal twins can be dependent on factors such as hereditary conditions and age, having identical twins is coincidental. This means that it can happen to any woman. An identical twin pregnancy is much rarer than fraternal twins. So, if your biggest wish is to double the joy with identical twins, you must rely on good luck.


If you liked this post, you may also like this post about bodily changes during pregnancy.