If the "odds" of a family of two being 2 boys being just slightly over 25%, two girls is just slightly under 25%, and 1 boy/1 girl being just about 50%, (that's correct, right?) what are the ACTUAL population statistics?
I guess what I'm after is- is there proof that some couples are really "set" to produce one gender? If so, the boy/boy, girl/girl families would be above what the mathematical odds are, right?
I am not sure of odds or actual statistics, but I pay A LOT of attention to gender make up of families and I know of many more families of single gender than mixed. I would go as far as saying mixed gender families make up only 25-30% from my observations in the area I live.
I notice the gender makeup of families too - can't help myself I guess :P
I know a LOT of 2-child families that are same gendered. I see less 3-child families (since so many people stop at 2!) but I'd have to say that from my observation, I see a lot of mixed 3-child families - mostly BGG or GBB, but also BBG and GGB. I don't see as many where the opposite gender is in the middle.
Yes! They did study it and found that the gender ratio was NOT what should be statistically expected. That's why scientists study gender ratio, because it does deviate from what is statistically expected. (I'll delve into my papers and find the actual numbers for you.)
Shockingly, research has shown that the actual number of baby boys to girls conceived, is actually 140-160 boys for every 100 girls!! WAY, WAY more boys than girls are conceived, but so many more boys are miscarried, that at birth, the ratio is 106-100.
For 2-Children Families
All Boys - the real number was 25.8% (25.0% Predicted)
Mixed genders - 52.2% Actual (50.0% Predicted)
All Girls 22.0% Actual (25.0% Predicted)
So right away, you can see that it's more common to have two boys than it is 2 girls, by more than 3%!!!
3-Children Families
All Boys 14.9% Actual (12.5% Predicted)
Mixed 73.0% A (75.0% P)
All Girls 12.1% Actual (12.5% Predicted)
4-Children Families
All Boys 9.1% Actual (6.3% Predicted)
Mixed 85.4% A (87.4% P)
All Girls 5.5% Actual (6.3% Predicted)
Four boys are more common than four girls by a whopping 4%!!
And in every category, mixed gender families were less common than they technically "should" be.
Now THAT's crazy!! Guess those y's have a HUGE advantage gettin' to that egg!Quote:
Originally Posted by atomic sagebrush
Thanks! This really is fascinating. Doubling up on my sway efforts! Looks like swaying for a DD is THIS HARD for a reason!Quote:
Originally Posted by atomic sagebrush
everyone i know has boys and girls or a boy and a girl.
This is what I point out to people when they rudely tell me "poor you, 4 girls!!" I tell them no actually we are very lucky and very blessed to get 4 girls!!!!Quote:
Originally Posted by atomic sagebrush
My sister had one boy and three girls after the boy. She is definitely blessed because the odds are stacked against girls.
I agree totally! All one gender families are amazingly special!!!Quote:
Originally Posted by TTC5
A lot of people get same or mixed genders because of diet change..... my ob dr is doing a little research based on his 18 years in the OB/GYN bis! I don't know all the % and facts yet, I will update when I know.
1. Most surprise and teen pregs are girls. Because when people want to get pregnant they tend to eat healthier which results in a boy.
2. People who are treating vitamin issues (like me A/E/Iron/D) and have a surprise preg have a 90% chance at a boy.
3. People who are breastfeeding and conceive have a better chance for a girl because the nutri goes to the breastmilk first and then to the mom/baby oven. The earlier you get pregnant the higher the odds, nurser 0-6mths you have a 90% chance at a girl, 6-12mths it is about 70% chance a girl, 12-24mths 40% chance at a girl.
4. People who are "planning" on a 2nd or 3rd or whatever # will change their diet to prepare for a new baby... loosing a ton of weight from the other/s pregnancies or eating a balanced diet. All this will affect the outcome of the gender. One lady resently had a son after 9 girls because the dr told her to gain weight she was under weight.
I have been trying to look at the families lifestyle and comparing it with the swaying facts... a lot is so true about diet, vitamins, herbs, and activities.
This is so sick! Every gender is a blessing, people are having so much problem to have a baby regardless of gender, how can a human being can say something like this. You said well. !Quote:
Originally Posted by TTC5
2. People who are treating vitamin issues (like me A/E/Iron/D) and have a surprise preg have a 90% chance at a boy.
hmmm........i've been told I'm anemic in the past, I'm not taking any iron pills though. So if I am treating my anemia I am more likely to have a boy? If I am not taking my iron supps does it change anything?
If you have anemia you should be taking something for it if you plan to get pregnant because it can affect your baby... iron is very important in pregnancy - online post....Quote:
Originally Posted by SA77
"Iron is essential for making hemoglobin, the protein in red blood cells that carries oxygen to other cells. During pregnancy, the amount of blood in your body increases until you have almost 50 percent more than usual. And you need more iron to make more hemoglobin for all that additional blood. You also need extra iron for your growing baby and placenta. Unfortunately, most women start pregnancy without sufficient stores of iron to meet their body's increased demands, particularly in the second and third trimesters. If you get to the point where you no longer have enough iron to make the hemoglobin you need, you become anemic.
Your risk is even higher if you have morning sickness severe enough to cause frequent vomiting, if you've had two or more pregnancies close together, if you're pregnant with more than one baby, if you have an iron-poor diet, or if your pre-pregnancy menstrual flow was heavy.
This is why the amount of iron you need shoots up during pregnancy from 18 to 27 milligrams (mg) per day. Because it's hard to get enough iron through diet alone, the Centers for Disease Control and Prevention recommend that pregnant women take a daily supplement of 30 mg of elemental iron as a preventive dose. Many prenatal supplements contain that amount.
Iron deficiency is by far the most common cause of anemia in pregnancy, but it's not the only cause. You could also develop anemia from not getting enough folic acid or vitamin B12, by losing a lot of blood, or from certain diseases or inherited blood disorders such as sickle cell disease. How does iron-deficiency anemia affect my baby's health and mine?
Your baby does a good job taking care of his iron needs – he'll get his share before you do. Still, maternal anemia can affect a baby's iron stores at birth, increasing his risk for anemia later in infancy.
Iron-deficiency anemia during pregnancy is linked to an increased risk of preterm delivery and low birth weight. It's also associated with a higher risk of stillbirth or newborn death, so it's something to take seriously.
Iron-deficiency anemia affects your health as well. It can sap your energy and make it harder for your body to fight infection. And if you're anemic later in pregnancy, you're more likely to have problems if you lose a lot of blood when you give birth. You may feel dizzy, have a rapid heart rate, or have other symptoms that require you to stay in the hospital an extra day or two. You're also more likely to need a blood transfusion. And there's research suggesting that anemia may even raise your risk of postpartum depression."
Take iron with C, D, and calcium.... if swaying boy drink a small cup of milk with the vitamins because it will help your body to absorb it.
Quote:
Originally Posted by purplepoet20
I actually would like a girl next time....hopefully my prenatals have the correct amount to get me up to where i need to be.
TTC5 I love that! Lovely perspective, and an even better retort to someone's rude comment.Quote:
Originally Posted by TTC5
I personally had a girl "surprise", and have 2 other friends, one who had 1 boy and another with 2 boys, who were "surprised" with girls. I think there is definitely something to how it happens ... ours came while I was on BCP's, so the horomones I think had something to do with it. My friends were both breastfeeding newborns.Quote:
Originally Posted by purplepoet20
SA77 - prenatals are prefect for a balance of all vitamins.
The whole statistics thing fascinates me too. I was just going over the make-up of the families on our former street the other day. It always seems to me that I see more single gender families than mixed. So just for fun I chalked up all the families on our street...there are 14 families with kids, and 30 children on the street. Of those 30, 16 are girls and 14 are boys. Of the 14 families, ONLY 5 are same gender! The other 9 all have some combo of boy/girl, so at least on our street it certainly is the "norm" to have a mix.
It's so surprising to hear the skew of boy conceptions is so high!
If anything, anemia would make you more likely to have a girl (because low nutrients seem to sway pink) BUT we have no hard evidence that iron sways either way.Quote:
Originally Posted by SA77
Prenatals are not the greatest source of absorbable iron - for a TTC pink iron source, try heating cran juice in a cast iron pan - the acidity of the cran will dissolve some of the iron of the pan and this iron is more easily absorbed by your body than the iron in vitamin pills are. You can stir in some Splenda (it's prob. best not to use aspartame as I've read some stuff that makes me think it's better not to heat up aspartame) to make it even more pink friendly, or use blackstrap molasses (sways blue but has extra iron in it.)Quote:
Originally Posted by SA77
I have no idea but everyone else in my family have girls and boys only not me.
It is amazing isn't it? But that is the actual number, my source is a college-level genetics textbook pub. in 2006 and I've seen it several other places in addition.Quote:
Originally Posted by begonia
My experience has also been the surprises are girls. Almost without exception. Even with women who have had4 and 5 of the same gender already. (Altho Keeley had a surprise boy after 8 girls, so who knows!!)Quote:
Originally Posted by begonia
This is def. interesting because based on the Trivers-Willard hypothesis, I had always "expected" there to be more girls born to teen moms but when I researched it, it turns out that overall there are actually more boys.Quote:
Originally Posted by purplepoet20
This is really interesting...
Well teens tend to eat alot of fried foods,soda,candy,salty fries so i would think more boys make sense right?Quote:
Originally Posted by atomic sagebrush
Yes, but many teens are also not fully fertile/physically developed which I would expect to sway pink. They are also less likely to be in committed relationships which also sways pink for reasons we don't understand. And they don't always eat right, either.Quote:
Originally Posted by queen-of-harts
Of course, teens that are finished with puberty would actually be at their peak of fertility and teenage boys prob have sky-high sperm counts, so it probably all averages out!
The two teen moms in our town both had boys but one was in a long-term relationship and the other was a big tough girl who just looks like she should have boys.
Speaking of how boys are mc more and die more in infancy-it really makes sense that if boys are more fragile than it would be a bad idea to give a boy to a mom who is already lacking vitamins and calories..that would be putting even more odds that a male would not survive.I love all these moments when the things everyone is saying makes perfect sense to me :)
Exactly! And taking it further, even into adulthood, a guy who has had ample calories in childhood is going to have a way better chance to compete for a mate to hand down his genes than a guy who has never had enough food his entire life. Our genes "want" to survive, so it makes total sense that if our environment is more conducive to a daughter surviving/reproducing, that is what we'll have.
I rem. the day when I first found the Trivers Willard hypothesis...my hands started shaking and I broke out in a sweat and everything. I thought, this is it, this is the reason why all these things would work! I was freaking out for days afterwards!!! It made SO much sense whereas timing never made any sense to me at all, why would it matter?? And calcium intake did not apply to me personally so I had a hard time buying into it. Then within a month I found the Maternal Dominance Hypothesis and the blood glucose stuff and I am still in awe that no smart person has put this stuff all together yet.
You're that smart person!! Seriously, if I ever did conceive a girl, her middle name would have to be Atomic :DQuote:
Originally Posted by atomic sagebrush
:suprise: Awww! :bigsmile: That is really touching to me! (Don't worry, I won't hold you to that WHEN, not if, you conceive a girl.
I'll let you have faith on my behalf :happy:
Interesting! I had my first at 15, big suprise and had a girl. I also fell preg whilst breastfeeding DD3!! And overall, have always been a dieter and losing tonns of weight!Quote:
Originally Posted by purplepoet20
ugh so this is going to be harder for me to conceive a girl, I concieved a boy breastfeeding, and conceived a boy after losing 50lbs, wow i better get on the ball on my sway....Quote:
Originally Posted by purplepoet20
Most of us conceive an opposite at some point...just by virtue of getting older, you raise the odds that you'll conceive a pink bundle!
Both my girls were surprises. So was my niece, and two other friends' daughters. However, I do know a family with a surprise boy.Quote:
Originally Posted by atomic sagebrush
My brother was a surprise boy as well.
My sister has a surprise girl. She had an IUD!!! Apparently, it had fallen out but she never noticed. This is actually her second girl - hate to say I was sooo jealous. :(
So, I have a question about the vitamins/nutrients. I haven't changed my diet a whole lot, but I did quit taking my multivitamin. I took it religiously when I concieved both boys. Hoping that NOT taking it will sway girl??? I'm a tiny bit concerned about the folic, though, because shouldn't we have folic before conception? My attempt was last night so I'm going to start my folic today in case I concieve. I hope that's OK...