(Closed) Odds of having twins? (Runs in family)

posted 3 years ago in TTC
Post # 2
Member
1961 posts
Buzzing bee

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lcvalado :  I’ve always been curious about this as well 🙂 My maternal grandmother is a fraternal twin, and there are also several sets of fraternal twins on my maternal grandfather’s side of the family. 

I’ve also heard that fraternal twins are genetic, and it would make sense that it’s the mother (to be)’s side of the family that needs to carry the gene, as fraternal twins are the cause of two eggs being dropped at one time.

Curious to hear other bees’ stories about this!

Post # 3
Member
2167 posts
Buzzing bee
  • Wedding: October 2013

1/100 pregnancies result in twins, straight from my doctor’s mouth when I told him my irrational fear of having twins and it not running on the maternal side of my family. 🙂 

Sounds like you have a chance of having twins since it’s proven to run on your maternal side of your family!

Post # 4
Member
701 posts
Busy bee
  • Wedding: October 2016

I think there’s a lot of variables…so having only those two instances in your family probably wouldn’t up your odds that much without knowing the cause…like certain things (for example a miscarriage) can trigger hyper ovulation which leads to multiples…number of previous pregnancies…maternal age…etc can impact whether or not twins are conceived. Then there’s also the chance that one of those instances of twins were identical twins, in which case it would have no impact on your odds of having twins. Also, I know people with strong family histories of twins (that were twins themselves) that have only had singletons, and people that have zero family history that have had fraternal twins…so ya never know until you’re preggo with them.

Post # 5
Member
657 posts
Busy bee

I’m curious about this as weli!

My grandma (maternal side) had 2 sets of twins. Yikes! My mother is one of those twins. None of the grandkids have had twins yet so I feel like the odds are slowly getting worse (or better?) for me

Post # 6
Member
9388 posts
Buzzing Beekeeper
  • Wedding: July 2016

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kimmacph :  hahah, well your odds are actually totally independent of your cousins.  I’m sure you know that, I just appreciate the stats humor.

Also, from the very little I’ve read, fraternal twins in the family only increases the likihood you have twins by a little bit.  If you’ve had fraternal twins before, on the other hand, you’re twice as likely to have them again!

Post # 7
Member
9795 posts
Buzzing Beekeeper
  • Wedding: September 2013

My mother had fraternal twins (after having me).  I have two singletons.  I’d guess maybe her age and subsequent pregnancy had more to do with it (she was 34-35 when she conceived them) since twin rates go up as you get older.  Identical twins is just random chance so everyone should have the same odds.  There are lots of variables.  https://www.babycenter.com/0_your-likelihood-of-having-twins-or-more_3575.bc   Chance of having twins are probably only 1-3%…so it’s unlikely no matter the family history.

But yes, only your side matters.  The father-to-be’s family history does not matter for your own chances of having them.  It’s all on whether 2 eggs are released and fertilized.  I’m not sure why you’d want twins over a single birth given the choice, it is very stressful on your body and potentially life threatening for the babies as they are at a much higher risk for preterm birth and the associated risks that go along with that.  Most people romanticize it but there are a lot of risks I would never choose willingly.

Post # 8
Member
1961 posts
Buzzing bee

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kes18 :  Well the good news it that OP can’t actually choose that willingly! It’s all up to chance 🙂 But it’s good to be prepared, just in case it does happen! 

Post # 9
Member
9795 posts
Buzzing Beekeeper
  • Wedding: September 2013

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hopfenn :  There are people that can choose to have twins willingly (or at least try for it).  As long as you have the money for it. Just like there are people that can choose to have a particular sex.

Post # 10
Member
1260 posts
Bumble bee
  • Wedding: City, State

we have 12 sets on my momʻs side so Iʻm hoping for a set too!

Post # 11
Member
616 posts
Busy bee

Fraternal twins – two or more eggs are released in one cycle by the Mother

Identical twins- a fertalized egg splits it half

 

The Father’s genes have nothing to do with either. The Mothers genes may make her more likely to release two or more eggs resulting in Fraternal twins. She may also release more than one egg because of fertility treatments or simply due to her age. Identical twins are a fluke and have no genetic component whatsoever. 

Post # 12
Member
7150 posts
Busy Beekeeper
  • Wedding: September 2015

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lcvalado :  3 ladies in our April 2018 moms group are having twins (so far that we know of). One has a grandfather that is a fraternal twin, I think that runs on her moms side. One was completely random… no history! And the other one was taking Clomid, so she thinks that has something to do with it.

Fraternal = can be inherited

Identical = completely random

 

ETA: there are 40 women in our April 2018 moms group.

Post # 13
Member
7811 posts
Bumble Beekeeper
  • Wedding: February 1997

Your chances are higher if your mum or grandmum were a twin themselves, but fraternal twins can also run in families. Like PPs have said, this is only applicable to women, though – a man can pass on the tendency to have twins to his daughter, but cannot affect his wife’s pregnancies as far as twins go. An older mum is more likely to have twins (though her chances of conceiving are lower overall), and statistically the odds go up around age 35, age 45 and age 50 (though it is rare for women to become pregnant in general at 50). Overweight women are also more likely to have twins (but may have a harder time conceiving overall), as are taller-than-average women. 

Still, the odds tend to be low overall unless you were a twin yourself, your mum was a twin or your grandmum was a twin.

Post # 14
Member
3230 posts
Sugar bee
  • Wedding: May 2015

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lcvalado :  fraternal twins are genetic, but I believe skip a generation (as shown by your great grandma and then mom conceiving them). 

Post # 15
Member
1468 posts
Bumble bee

I’m 15 weeks pregnant with fraternal twins, we found out 2 weeks ago. My grandfather, on my father’s side, was a fraternal twin, but none of his 4 children or 6 grandchildren had twins … apart from me. So I wouldn’t say a family history makes it likely, and we certainly weren’t expecting it. 

Twins don’t actually skip a generation, they can just sometimes appear to – for example, my dad may have the twin gene from his twin dad. Dad can’t influence my mother having twins, but he can pass the gene down to his daughter – e.g. Me.  My doctor told me that, along with 1 in 67 is the odds of having twins – so a little higher than other PP’s doctor said. 

Twin pregnacies are higher risk (depending on the type of twins you’re having) but saying that the vast majority of twins are born just fine, so we’re not worried. You can worry just the same about a singleton birth, but worrying won’t make a difference to the out outcome. 

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