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AIBU to think that most babies born to older Mum's are boys?

(104 Posts)
SleepFreeZone Tue 26-Sep-17 13:27:32

In my own experience and just out and about at preschool and primary it seems that the older mum's predominantly have boys. Does anyone else think the same or do you think it just feels that way as I am old, have two boys and have lost two girls in pregnancy due to abnormalities?

Standingcat Tue 26-Sep-17 13:29:13

No in my group of older mums we all have DD's

wasonthelist Tue 26-Sep-17 13:29:37

Our DD (first and only child) was born 3 days short of her Mum's 40th. So anecdotally based on a tiny sample size yabu

MaisieDotes Tue 26-Sep-17 13:30:14

That reflects my own situation actually as I had DD at 25 and then the DSs at 38 & 39.

But it can't be a "thing"- surely?

WeddingFever Tue 26-Sep-17 13:30:45

As the sperm determines the gender, how do you rationalise this observation?

fuckfuckfuckkkk Tue 26-Sep-17 13:30:48

Nope my mum had my little sister at 41

Rosa Tue 26-Sep-17 13:30:52

well you would be wrong here ....

Haudyerwheesht Tue 26-Sep-17 13:31:53

Anecdotally from my small sample group most of ds (10) friends mums are older than me (35) whereas most of dd's (7) friends mums are significantly younger. However, I think it's very much just coincidence! My sister had 2 girls at 40 and 41. Another friend had a boy at 42, another had 2 boys and a girl at 39,40 and 42 and my mum had me at 41 and her mum had her and 46!

thecatsthecats Tue 26-Sep-17 13:32:55

My mum had a son at 28, daughter 30, then two more daughters 40/42.

Sex is actually determined by the sperm, so unless wombs are rejecting female offspring, you're looking at the wrong side of it...

strangestdirection Tue 26-Sep-17 13:34:49

I thought it was the opposite but with the sperm- the older a man the more likely he is to have daughters? www.google.co.uk/amp/s/www.psychologytoday.com/blog/the-scientific-fundamentalist/201104/why-are-older-parents-more-likely-have-daughters%3famp

Haudyerwheesht Tue 26-Sep-17 13:35:24

Actually this suggests that you're slightly more likely to have girls as you age.

ParsnipLeekAndLemonSoup Tue 26-Sep-17 13:36:12

Are they?! Most of the older mums I know have got girls.

I am a young mum and have a boy.

SleepFreeZone Tue 26-Sep-17 13:37:00

But surely as the sperm and egg divide into cells and a baby starts to be made the chromosome issue (in my case) could be made by either the sperm or the egg as the two become one?

From doing some research the trisomy 18 abnormality that I recently had is much more common with girls. I'm not sure about trisomy 21 🤔 So it stands to reason that as an older woman TTC I am more likely to miscarry a girl and carry a boy, no?

RavingRoo Tue 26-Sep-17 13:37:19

Older men’s sperm doesn’t live very long according to the ivf specialist I saw and so might favour a boy as the sperm that makes boys tend to move faster. But he said not to pin our hopes on any one gender as there’s no scientific evidence.

BenLui Tue 26-Sep-17 13:37:25

You are wrong. The male parent determines the sex of the baby, not the female.

RavingRoo Tue 26-Sep-17 13:40:02

Trisomy 18 can be caused by damaged egg or damaged sperm.

SleepFreeZone Tue 26-Sep-17 13:41:27

That's interesting RavingRoo I always assumed it was my eggs at fault.

RavingRoo Tue 26-Sep-17 13:44:14

Read this. It’s fairly straight forward

www.stanfordchildrens.org/en/topic/default?id=trisomy-18-and-13-90-P02419

zzzzz Tue 26-Sep-17 13:46:35

How old is an “older mum”?

Londoncheapo Tue 26-Sep-17 13:48:08

The sperm determines the sex in the simplest sense, but factors such as the pH of the woman's cervical mucus tend to influence which sex sperms are more likely to get through. The pH in turn is influenced by age and psychological factors.

Being younger, being in a happy state of mind, eating plenty of calories and protein increase the odds of a boy.

Being older, being depressed/anxious, eating a less rich diet increase the odds of a girl.

HeteronormativeHaybales Tue 26-Sep-17 13:53:11

I had boys at 28 and 30 and a girl at 38. <anecdata>

MinorRSole Tue 26-Sep-17 13:55:39

I had b/g twins at an older age, I'll just sit on the fence which will probably break under my lard arse

cjt110 Tue 26-Sep-17 14:00:05

I was 27 when I had my son. All my friends have girls....

SleepFreeZone Tue 26-Sep-17 14:00:50

zzzzzz in my head I guess I'm thinking 38 upwards

Tomorrowillbeachicken Tue 26-Sep-17 14:01:12

all my older mum friends have girls, i'm only one with a boy.

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