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Childbirth

Share experiences and get support around labour, birth and recovery.

Original poster

Are first borns lighter at birth than their younger siblings?

32 replies

Posey · 27/02/2004 18:56

In my extensive research (well asking around friends ) it seems that most first babies are lighter than the next ones. My first was 9oz lighter than my 2nd, and dh and I, both 2nd born, were substantially heavier than our older siblings.
Is this your experience? How did your babies weights differ?
Does anyone know if this is a recognised fact or is it just the case with the people I know? Is there a reason for this?

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musica · 02/03/2004 09:53

Ds - 9lb12oz - 12 days late
Dd - 10lb2oz - 14 days late

Gumboot · 02/03/2004 09:49

Both of mine weighed the same so no difference other than maybe a fraction of an ounce

Bozza · 02/03/2004 09:33

I've heard that first borns are usually the smallest. Being 29 weeks gone with no2 and a first-born at 9'10 I'm hoping to buck the trend. But I've heard people say that there second was lighter.
eg recently a friend gave birth 1st 8'10, 2nd, 8'2.

I've noticed on this thread though that people generally seem to be having big or average or small babies. Would be very surprised if this one weighed in at more than a few ounces less than 9lb.

fio2 · 02/03/2004 09:20

dd was 7lb 5oz (13 days late)
ds was 8lb 3oz (8 days early)

me 7lb something
younger sister 8lb something < this is what my mum said!! got a good memory like me

LIZS · 02/03/2004 09:01

ds 3080g / 6lb 12.5oz
dd 3150g

dd was 10 days late too so not much difference at all.

Ghosty · 02/03/2004 06:31

DS ... at 40wks + 5 days ... 10lbs 1/2 oz
DD ... at 40wks + 3 days ... 10lbs 10 oz
I daren't think about having a third

bundle · 01/03/2004 11:23

a bit:
dd1 8lb 4.5oz
dd2 8lb 9.5oz (both about 2 weeks 'over' dates)

dinosaur · 01/03/2004 11:22

That's how it was with us. DS1 was 7lb2, and DS2 was 8lbs.

Bron · 01/03/2004 11:11

This reply has been deleted

Message withdrawn at poster's request.

Bron · 01/03/2004 11:09

This reply has been deleted

Message withdrawn at poster's request.

alison222 · 01/03/2004 10:47

DS (first born) 10lb exactly, DD 9lb 8oz.
so no BUT, DS was 15 days late

Ailsa · 29/02/2004 12:31

DD1 8lb 8½oz - 42wks
DS 9lb 1½oz - 41wks
DD2 7lb 7½oz - 40wks

hmb · 28/02/2004 19:54

Dd 8lb 7oz, on her due date
Ds 9lb 1oz, but he was two weeks early! No diabetes in pregnancy, he was just plain big!

Kayleigh · 28/02/2004 19:43

ds1 was 6lb 2 days early and ds2 was 6lb 8ozs 3 days late.

Skara · 28/02/2004 19:34

no1, girl, 6lb 15oz, born on due date
no2, boy, 9lb 4oz, born 5 days after due date
no3...? we'll see

zebra · 27/02/2004 22:13

Me: 2.92 kg, then 3.25 kg (just to make SP happy).
Friend: 9lb10oz, then 8 lb8oz.
Aunt: 10lb, 10lb, 8.5lb, 10lb.
Cousin: 6lb13oz, 9lb12oz, 8lb10oz.
DH's cousin: 8lb8oz, 8lb8oz, 9lb10oz.

Only ones I can recall not involving twins. The pattern just looks all over the place, to me.

kiwisbird · 27/02/2004 22:06

no 1 7lb 11 2 weeks late
no 2 7lb 8 oz 2 weeks early
Technically debatable!!

stupidgirl · 27/02/2004 22:00

Mine was.

Ds 5lb 7oz (on due date)
Dd 6lb 12 (and a half!)oz (4 days early)

Original poster
Posey · 27/02/2004 21:52

Well there goes my theory

OP posts:
SenoraPostrophe · 27/02/2004 20:18

baby #1: 3.06 kg
baby #2: 3.77 kg

Am I the only metric person?

suedonim · 27/02/2004 20:15

8lb 8oz @ 40+3wks
8lb 8oz @ 41+3wks
7lb 5oz @ 41wks
7lb approx @ 39+6wks

Slinky · 27/02/2004 19:59

DD1 was 8lb 2oz - at 41 weeks
DS1 was 8lb - at 39 weeks
DD2 was 8lb 12 1/2oz - at 42 weeks.

emmatmg · 27/02/2004 19:50

DS1 7lb 11oz
DS2 8lb 5oz
DS3 8lb 4oz(with nappy on, don't know why MW didn't weigh him without it)

Not sure of our weighs but my brother was the first and heaviest, then my sister next and then I came along last and was the lightest.

lou33 · 27/02/2004 19:37

dd1 6lb 6oz 39 weeks
dd2 6lb 10 oz 37 weeks
ds1 8lb 38 weeks
ds2 6lb 4oz 36 weeks

Janh · 27/02/2004 19:12

DD1 - 5.11 (41 weeks)
DD2 - 7.12? (40 weeks)
DS1 - 8.3 (38 weeks)
DS2 - 7.4? (37 weeks)

(All caesarians.)

Sorry about question marks - can't believe I have forgotten!

DD1 grew up under 25th centile, and DD2 above 75th, but they ended up the same height and weight. DS1 has been 50th throughout but was late developer and at 15 is just shooting up. DS2 is c 90th for height, but skinny.

Older brother, younger brother and I were all between 9.12 and 9.15 I think.

Obv I come from a very random family!