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Birth Size and IQ

post #1 of 91
Thread Starter 
Does birth size affect babies for the rest of their lives? I would like to believe that bigger babies will have lifelong benefits. My first daughter weighed eleven pounds, zero ounces. My second daughter weighed twelve pounds, eight ounces.

This article does give a nod to breastfeeding, too. I have seen similar articles but I had not seen this one yet.



http://tinyurl.com/6dkk4

http://www.smh.com.au/news/National/...?oneclick=true
post #2 of 91
I can't read the article without registering.
post #3 of 91
I was 5lbs 3oz, and I have a genius level IQ. (not that I'm bragging, I don't really believe in IQ tests anyway)
post #4 of 91
LOL...I was 7 lbs 9 1/2 oz and have a 122 IQ (or did before I had kids and pregnancy sucked my IQ through the floor... :LOL )
post #5 of 91
My DH was 7lbs at birth, has a genius IQ and was formula fed
post #6 of 91
Mine too! (Got breastmilk for 5 mos) Not sure about the genius part but she was tested as intellectually gifted. She's going to start first grade homeschool in the fall, her choice. She's 4 years old. Now common sense is another issue altogether. :LOL

Nitara was under 7 pounds and so far her therapist said she's intellectually way ahead of her age, and speaks about 75 words. She also was ff after I quit pumping after 7 weeks.
post #7 of 91
My dd was born two weeks early and was 6.8 lbs and stayed at 15h-50th percentile up until just recently. Now, at age two she is in 70th percentiles. She and I both have had since birth very large heads for our size and we are both very bright. All that being said, I don't think there is a correlation between size of anything and intelligence. Especially since the idea of intelligence varies from culture to culture and depends on which type of test you use.
post #8 of 91
There is a documented benefit of higher birthweight: decreased cardiovascular disease later in life.
post #9 of 91
Of my 4 children, the only IQ I know is of my oldest, and he tested, at age 8, at a really really bright IQ. Even though-we-know-all-kids-are-really-really -bright-in-their-own-way -and some-tests-are-really-biased-towards -healthy-not-poor-kids. He was 5 lb 11 oz and 3 weeks early. Completley bf for over 3 yrs, no formula.
post #10 of 91
There are a lot of articles about the IQ birthweight connection, just google birth weight + IQ to get a slew of them. Obviously many lower weight babies have high IQs (as seen here), but I think they are tying better maternal nutrition to better brain development.

And wow inezyv, 12 lbs! Way to go! My midwife came from a rural farming family and her mom's ten children were born unassisted, and her last was 12 1/2 lbs.
post #11 of 91
Well, that's just great. Another thread that says there's something wrong with being small. What a load of
I was a tiny baby, and so are my girls, and I'd say each of us has well above average intelligence. When I was a child, I tested at 180 (no joke). Of course, I went to public schools and had my intelligence squashed out of me, but regardless....

NO, birthweight has nothing to do with IQ - what a ridiculous notion! ...not to mention quite offensive. :
post #12 of 91
Sorry this seems to have offended you. The modest connection between birthweight and IQ just seems to point to good nutrition = good brain development, and poor nutrition may lead to less optimal brain development. I think in light of genetics and body size it is realistic that many small babies may have great maternal nutrition, and I am sure some geniuses may come from malnourished moms. All it means is that maternal nutrition is important.
post #13 of 91
I had very good nutrition with both babies. I am just a small person and I don't think I grow very big babies.
post #14 of 91
Quote:
Originally Posted by JoAida
I was 5lbs 3oz, and I have a genius level IQ. (not that I'm bragging, I don't really believe in IQ tests anyway)

: except that I was 5lbs 4oz.

Babies, like adults, come in all shapes and sizes. The idea that a particular body type somehow correlates to intelligence smacks of eugenics to me. That psuedo-science was discredited decades ago, and I would just as soon not see it make a comeback.
post #15 of 91
I came back to edit and apologize for my knee-jerk response, but think I'll just add a new reply instead. I can see how there might be a correlation seeing as how a certain segment of the population is going to score higher on IQ tests because of how inaccurate they are. IQ tests measure how well you take those tests, rather than a person's actual intelligence. So the same segment of the US population is going to have larger babies, and also score higher on those tests. It doesn't mean a thing, really.

But yes, saying that large babies are superior to smaller babies is quite offensive. All babies are special in their own way. We shouldn't have to put down other's children in order to feel better about our own.
post #16 of 91
Quote:
Well, that's just great. Another thread that says there's something wrong with being small. What a load of
I was a tiny baby, and so are my girls, and I'd say each of us has well above average intelligence. When I was a child, I tested at 180 (no joke). Of course, I went to public schools and had my intelligence squashed out of me, but regardless....

NO, birthweight has nothing to do with IQ - what a ridiculous notion! ...not to mention quite offensive.
ITA. I was 5lbs 13oz, my girls were 6lbs 11oz & my youngest was 6lbs 5oz(born 2 weeks overdue). Weight does not mean higher intelligence or superiority it just means they weigh more.

Quote:
The modest connection between birthweight and IQ just seems to point to good nutrition = good brain development, and poor nutrition may lead to less optimal brain development. I think in light of genetics and body size it is realistic that many small babies may have great maternal nutrition, and I am sure some geniuses may come from malnourished moms. All it means is that maternal nutrition is important.
See now this is still offensive. you are saying that small babies probably had mothers with poor nutrition. Good nutrition does not guarantee a larger baby. I agree that poor nutrition MAY lead to less optimal brain development but a small birth weight does not mean that there was poor nutrition or that the small birth weight baby has a lower IQ.
post #17 of 91
But did the OP say that all small babies are dumb and all big babies are smart? A tendency is not an absolute.
post #18 of 91
I was a small baby born to a small baby and I gave bi rth to small babies. Some of us are just small.
post #19 of 91
Quote:
Originally Posted by CarrieMF
See now this is still offensive. you are saying that small babies probably had mothers with poor nutrition. Good nutrition does not guarantee a larger baby. I agree that poor nutrition MAY lead to less optimal brain development but a small birth weight does not mean that there was poor nutrition or that the small birth weight baby has a lower IQ.
Hi, sorry my post was offensive. I am not getting where I said small babies probably had moms with poor nutrition, did I word it badly?. I said "I think in light of genetics and body size that it is realistic that many small babies may have great maternal nutrition..." Meaning many moms have well-nourished, healthy babies whose size is dictated by genetics. My point has been that these studies are showing maternal nutrition is important to brain development, regardless of size, and that malnourished babies may not have optimum brain development(and there is obviously a major difference between small babies and malnourished ones, as I am sure you know). Does that make sense, or am I digging myself in deeper? My nursing and preggo brain should probably steer clear of these threads, lol. BTW, I consider myself a intelligent person (may not show it on MDC though), my birth weight was just barely 6 lbs (despite the fact I have 9 lbers).
post #20 of 91
What would be interesting to see is the results if you simply compared small, but healthy & full-term infants to larger, and healthy & full-term infants.

There are a couple situations I can see having effects on long term brain development that I can also see being more likely to produce low birth weight (prematurity & drug-use/smoking while pg). BUT, comparing drug-exposed, premature babies to 8 lb babies isn't necessarily pointing out a problem with *size* but what caused the size.

I do not think that the concept, in and of itself is offensive. Probably not terribly accurate, but there can always be a trend. For example, I have read that babies born in April are statistically significantly more likely to become doctors (MDs) than babies born in other months. Just one of those odd thinks. It doesn't say anything about *them* or their parents and it certainly doesn't imply that babies born in other months can not be MDs.
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