supplementation cuts colon cancer risk
A
diet enhanced with multivitamin and mineral supplements may dramatically lower the risk of developing precancerous colon cancer lesions, according to research published in the Canadian Journal of Physiology and Pharmacology. Nearly 150,000 men and women in the United States are diagnosed with this second-most com-
mon form of cancer each year. In the study, rats were fed a high-fat (20 percent) diet for 32 weeks. Those fed a high-fat, low-fiber diet and also exposed to a carcinogen, developed precancerous lesions of the colon. The animals that underwent a similar diet and treatment, but also received daily vitamin and mineral supplements, showed an 84 percent reduction in the formation of precancerous lesions and did not develop tumors.
FryiNG PAN FAUX PAs
F
ried foods may please the palate, but cooking them in the wrong medium, such as sunflower oil, can present a health risk. Researchers from the University of the Basque Country, in North Spain, have discovered that organic aldehyde compounds become toxic when heated. These chemicals, previously linked with some types of cancer and neurodegenerative diseases such as Alzheimer’s and Parkinson’s, are generated by the degradation of fatty acids in sunflower and other oils high in polyunsaturated fats, and some remain in food after frying. Oils with higher concentrations of monounsaturated fats, such as olive, peanut or coconut, are less worrisome if frying is the only cooking option.
Serious inquiries only.
keep tabs on radiation exposure
T
he cumulative exposure to ionizing radiation used in medical diagnostic tests from dental and chest X-rays, mammograms, heart health exams and other procedures adds up, often reaching or surpassing the recommended lifetime limit of 100 milliSieverts (mSv) set by the American College of Radiology, according to a recent Harvard Medical School advisory. Among the tests that emit ionizing radiation are computerized tomography (CT scans), cardiac catheterizations, coronary CT angiograms, cardiac calcium scoring and some types of stress tests. Heart tests that pose no radiation risk include electrocardiography (ECG), echocardiography, ultrasound and magnetic resonance imaging (MRI). Dr. Warren Manning, chief of noninvasive cardiac imaging and testing at Beth Israel Deaconess Medical Center, in Boston, and a Harvard Medical School professor, advises, “One or two CT scans over a lifetime is appropriate. But if you have a condition that requires repeated monitoring, a test that does not expose you to ionizing radiation may be preferred.” Many radiologists take precautions to minimize clients’ radiation exposure, such as performing cardiac CT scans with one-sixth the conventional radiation dose.
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