Weight loss and Weight Chat Blog

December 4, 2008

CT angiography: A scambuster update

Not long ago, I recommended you avoid CT angiography as a screening test for heart disease unless you were absolutely convinced that it was necessary and not just being ordered either because it’s a new, extremely cool, technology, or because your doctor has an equity position in the machine (meaning he or she or the practice profits every time the test is run because they own or lease the equipment). I noted that as a screening test for people without symptoms of heart disease, CT angiography has yet to be proven effective. Moreover, even though the test is quite short, there is significant radiation exposure from the X-rays used to obtain the high-tech images (orders of magnitude greater than that used in a simple chest X-ray).But let’s say that you actually have symptoms of coronary artery disease. Is CT angiography an appropriate diagnostic test for you? […]

Original post by natalieb and weightlossopinions.com

August 5, 2008

Granite and radiation: Are you at risk?

The New York Times has initiated some controversy with its July 24, 2008 article entitled “What’s Lurking in Your Countertop?” The article reports on the finding of worrisome levels of radiation being emitted from some granite countertops that were tested in a few homes. But the controversy is not whether granite countertops emit any radiation, but how much and if some pieces are more radioactive than others.
That’s because granite naturally contains some uranium, which is radioactive and which decays into radon that can also be released (radon is the second leading cause of lung cancer). It’s generally thought, however, that the amounts contained in most countertops are very small and not enough to pose a significant health hazard. Most experts agree that this amount of radiation exposure is insignificant in comparison with the “normal” background radiation we are all exposed to all the time from […]

Original post by natalieb and weightlossopinions.com

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