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Evolution's Path May Lead To Shorter, Heavier Women
Hugh Pickens writes "Yale University researchers believe that if evolutionary pressures of sexual selection and reproductive fitness continue for another 10 generations, the trends detected in their study may mean that the average woman in 2409 AD will be 2 cm shorter, 1 kg heavier, will bear her first child five months earlier, and enter menopause 10 months later. 'There is this idea that because medicine has been so good at reducing mortality rates, that means that natural selection is no longer operating in humans,' says Stephen Stearns of Yale University. 'That's just plain false.' Stearns and his team studied the medical histories of 14,000 residents of the Massachusetts town of Framingham, using medical data from a study going back to 1948 spanning three generations, and found that shorter, heavier women had more children than lighter, taller ones. Women with lower blood pressure and cholesterol were also more likely to have large families as were women who gave birth early or had a late menopause. More importantly, these traits are then passed on to their daughters, who also, on average, had more children. The study has not determined why these factors are linked to reproductive success, but it is likely that they indicate genetic, rather than environmental, effects. 'The evolution that's going on in the Framingham women is like average rates of evolution measured in other plants and animals,' says Stearns. 'These results place humans in the medium-to-slow end of the range of rates observed for other living things.'"
Wow. I had no idea when I went to sleep last night that I would wake up against Evolution. Where's the ID/Creationism Kool-Aid? Comin' on board... make some room.
...only if she's 5'3"
--- Do you believe in the day?
Any GP or OB/GYN will tell you that there is a minimum percentage of body fat below which a woman won't even menstruate.
They'll also tell you a woman should gain some weight during pregnancy, and that generally speaking the outcome of the pregnancy is better if a certain amount of weight is gained (unless the woman is already overweight, of course).
Again, I don't think they're saying thinner = bad, I think they're saying the population is shifting towards the optimum range. Skinny women have less, and less healthy children on average, so the average weight is rising by a small amount as they're outbred by heavier women.
There will be an upper limit to this effect as well - morbid obesity is not a good thing for getting or being pregnant, either.
Give that idiocracy shit a rest. It's not genetically dumber people who make more children, it's people lower on the social scale. As in, people in ghettos and immigrants. Poor education and poor nutrition (both which cause lower IQs) aren't genetically hereditary.
So-called smart people always confuse uneducated people with less intelligent people. Maybe they're not that smart after all.
You just got troll'd!
>>>If you don't like it, go rape some tall and skinny women into pregnancy, and ensure the children survive to perpetuate the cycle.
C'mon we're geeks No need for such crudities:
- Donate sperm to a bunch of banks (this should be easy for us)
- Hack the computer and replace your specs with some hot-looking guy's specs
- Unsuspecting women pick the man of their dreams, and instead get your sperm.
- Eighteen years later these women will be wondering why their kids look like Bill Gates instead of Tom Cruise
- ???
- Profit (genetically speaking)
"I disapprove of what you say, but I will defend to the death your right to say it." - historian Evelyn Beatrice Hall
Your facts are less correct than they were 50 years ago.
http://www.nytimes.com/pages/national/class/index.html
"The movement of families up and down the economic ladder is the promise that lies at the heart of the American dream. But it does not seem to be happening quite as often as it used to."
http://www.npr.org/templates/story/story.php?storyId=4662456
Eighty percent of Americans still believe it's possible to pull yourself up by the proverbial bootstraps. That's according to a New York Times poll reported last week, but a recent mobility study suggests the American Dream may be more style than substance.
http://en.wikipedia.org/wiki/Social_mobility
Upper nonmanual occupations have the highest level of occupational inheritance. [3]
http://money.cnn.com/2009/02/27/news/companies/lashinsky_hurd.fortune/index.htm?postversion=2009030310
As his father did before him, Hurd attended the Browning School - a prestigious all-boys school where classmate Jamie Dimon, now CEO of J.P. Morgan Chase, remembers seventh-grader Hurd as a good basketball player
The wealthy own the media and push the "you could be wealthy!" idea hard. It helps keep the lower class folks voting against their own self interests. It's why the wizard of wall street pays a lower tax rate on his monumental earnings than his secretary pays on her salary.
There is a tiny chance you will break into the wealthy classes. But, for the most part, they pass the good jobs down to their own. Just look at the way hollywood has been taken over by 2nd and 3rd generation actors. CEO jobs are less obvious but essentially the same.
Any idiot can bankrupt themselves-- but it takes a lot more than simple hard work to get into the executive class.
She was like chocolate when she drank... semi-sweet at first and then increasingly bitter.
Yo mama is so evolved...
"I like to lick butts!" by MobileTatsu-NJG (#32700246) (Score:5, Informative)
There's no need to bring Rush Limbaugh into this.
It's not universally true, but it is more or less an accepted fact.
Fertility rates are inversely proportional to income.
In the modern world there are a lot of reasons for this. The rich tend to have access to better education. therefore, they tend to try to start a career before a family (illustrated in comedic fashion by the Mike Judge movie Idiocracy). Then with their career dominating their lives, they usually only have a couple kids at the most.
More wealthy folks have better access to birth control. Again, better education plays into this. On the extreme end of the spectrum, you have folks who have superstitious beliefs. That doesn't help keep their fertility rates down any...
Economists and demographers have known about this correlation for centuries. And it's interesting because it goes across religions, across nationalities, race, and other factors. Poor Americans are just as likely to have a higher fertility rate as poor French, or Japanese. Poor Nigerians or Indians are even more likely because a poor American is fairly well off by Nigerian standards.
Side Rant: The Israelis in particular are worried about this effect because Israel is a democracy. And the Israeli Palestinians have a fertility rate several times that of Israeli Jews. Again, the average Israeli Palestinian is much poorer than the average Israeli Jew.
The Israelis are concerned because with the higher fertility rates of the Palestinian Israeli citizens, the Palestinians may become a majority in the "Jewish State" in a couple generations. This brings up all kinds of moral dilemmas for the Israeli government, who must try to balance it's commitment to a homeland for the Jews to it's commitment to democracy for all it's citizens.
A few minutes of on the Google came up with these:
http://www.economist.com/opinion/displaystory.cfm?story_id=14744915
http://www.economist.com/sciencetechnology/displaystory.cfm?story_id=14164483
http://www.cmaj.ca/cgi/content/full/177/8/846/F19
http://en.wikipedia.org/wiki/Sub-replacement_fertility
http://www.indexmundi.com/g/correlation.aspx?v1=67&v2=31&y=2004
Also, I have no idea why you brought Rush Limbaugh into this. I'm about as progressive a character as you're likely to meet. I don't know anyone that disputes this data.
Cause is another matter. Progressives would tend to contend that the reason is education, the nature of pre-industrialized societies, higher mortality rates among poor nations, the tempo of life in wealthy nations and classes.
And Rush would say they all want their welfare checks or something.
You're right about the lack of heredity for short-fatness though. It is environmental / cultural, not genetic.
Touch everywhere, even when inappropriate.