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Originally Posted by joepole
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"Healthy babies" and "birth defects" (or lack thereof) can be very different things. Aortic valve stenosis is one of many "birth defects" that show up children whose mothers did all the "right" things as often as it shows up in the children of crack whores. Fetal Alcohol Syndrome is an example of a birth defect that does correlate with maternal prenatal activity.
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Your view is to short sighted. Try thinking in terms of generations rather than in terms of mother/child.
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I have no idea what maternal activities correlate with autism, it's not something we ever worried about with our kids because my wife didn't have any vices (smoking, drinking, caffeine, etc.) during either pregnancy. Do you have any evidence to suggest that autism is caused (or contributed to) by maternal prenatal activity? If you do't then it's pretty foolish to make statements like the rise in the autism rate is "due to delinquent behavior resulting in abnormal family units...Teen pregnancy, single mothers, drug abusers..."
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No, what's foolish is to expect a direct, mathematically predictable rise in the number of birth defects in relation to the increased number of births. There are entirely to many variables that didn't exist in previous years, NOT due to man made influences. How about the increase in traist specific to African Americans , or even hispanics....the new largest minority.
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If you had to wager whether the typical single mother or pregnant teen of 2007 gets better or worse prenatal care than the typical middle-class housewife of 1940, where would you put your money?
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Did the typical single mother of 1940 have multiple sex partners? Experiment with drugs and/or alcohol? Did she work a physically demanding job or flip burgers part-time?
Seriously dude, do you REALLY think the modern single parent is in better health and therefore providing a better environment for her fetus simply because of progress in medical technology?