Got Milk?

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After learning of the many ways an experimental design can deliver inaccurate results(such as; participants not being selected randomly, biases and not ruling out rival hypothesis), I have become skeptical of many scientific claims.got milk.jpg

Many new studies bear results that contradict the common belief that milk makes your bones stronger. Some studies show milk drinkers to have stronger bones than non-milk drinkers, some studies yield the opposite, while some studies show no relation between milk and bone strength. How can there be so many different, contradicting results?
I believe many of these studies aren't selecting their subjects randomly. If you compare children that eat well, live a healthy life style and drink milk to children that lack milk in their diet and live an unhealthy lifestyle, the milk drinkers may have stronger bones and it won't necessarily be due to the fact that they have more milk in their diet. Another flaw in studies on the effects of milk may simply be a matter of correlation versus causation. There are researchers that claim drinking milk causes osteoporosis. "Evidence" of this claim is that the United States, with the highest consumption of dairy, has the highest rates of osteoporosis. This relationship may be due to one or more other variables such as: diet, exercise, and BMI (body mass index). The claim that milk builds stronger bones needs to be further researched and scientifically tested before I depend on milk as my source of calcium.
If there isn't much solid evidence for such a popular theory as milk building stronger bones, I wonder what, and how many, other mainstream theories need to be restudied?

Links to studies on milk's effects: http://www.livestrong.com/article/315144-does-milk-build-strong-bones/ http://www.whymilk.com/strong_bones.php http://www.hsph.harvard.edu/nutritionsource/what-should-you-eat/calcium-and-milk/got milk1.jpg

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Who would have thought? I have never heard of milk being questioned for its nutritional benefits. Good find

Erics096,
What a wonderful way of incorporating all the scientific principles we have been applying throughout this course. I did not realize that the U.S. had the highest number of osteoporosis cases! That's so amazing because it seems, logically, that we would have less. I agree with olso5796 that this is an interesting catch and I'm glad that there are peers out there who find this sort of thing and reflect on it. Thanks so much for blogging about his interesting topic!

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This page contains a single entry by erics096 published on October 9, 2011 8:14 PM.

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