Andrew einstein, Researcher

New York [US], March 29 : In a recent study, an international team of researchers found that those who get low doses of ionising radiation had a slightly increased lifetime risk of acquiring heart disease."The study suggests that radiation exposure, across a range of doses, may be related to an increased risk of not just cancer, as has been previously appreciated, but also of cardiovascular diseases," said Andrew Einstein, MD, PhD, professor of medicine at Columbia University Vagelos College of Physicians and Surgeons and one of the study's senior authors."It should not steer people away from receiving radiation if necessaryin fact many medical uses of radiation are lifesavingbut it underscores the importance of ensuring that radiation is used appropriately and kept as low as reasonably achievable."It's well known that exposure to high doses of radiation, from cancer therapy for example, can damage the heart. But firm evidence linking heart disease with low-dose radiationencountered by workers in the nuclear industry or from diagnostic medical imagingis less clear.The researchers used data from 93 studies covering all ranges of radiation exposures to find a relationship between dose and heart disease.They found an increased excess lifetime risk of 2.3 to 3.9 cardiovascular deaths per 100 persons exposed to one Gy of radiation. (In the United States, about 25 out of every 100 people die from cardiovascular disease; a person exposed to 1 Gy of radiation will have a slightly higher, 27% to 29%, risk of dying from cardiovascular disease).Few people other than those receiving radiation therapy will receive 1 Gy during their lives. But the researchers also found a higher risk of heart disease at low dose ranges (<0.1 Gy) more commonly experienced by the public and also for protracted exposures to low doses.More research is needed to determine the precise increased excess lifetime risk of heart disease from these low doses."The effect of lower doses of radiation on the heart and blood vessels may have been underestimated in the past," Einstein says. "Our new study suggests that guidelines and standards for protection of workers exposed to radiation should be reconsidered, and efforts to ensure optimal radiation protection of patients should be redoubled."Disclaimer: This post has been auto-published from an agency feed without any modifications to the text and has not been reviewed by an editor

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Health :Study reveals how low-dose radiation associated with heart disease

New York [US], March 29 : In a recent study, an international team of researchers found that those who ... ...