Radiation risks 'need updating'
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A UK panel examining radiation risks says official estimates of the dangers to health may be wide of the mark - but not substantially.
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Medical scans expose people to similar levels of radiation as atomic bombs used in Hiroshima, say experts.
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Warnings could be introduced after analysis confirms high levels of bacteria and viruses.
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Tests that determine whether toxic chemicals accumulate in food may be missing some hazardous materials and need to be updated, a Canadian researcher said Thursday.
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Two new studies suggest that exposure to sunlight might not be as risky for cancer as is generally believed.
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As a treatment for breast  cancer, radiation, even modern regimens, appears to increase  the risk of cardiovascular disease, according to a report in  the Journal of the National Cancer Institute for March 7.
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The number of sites contaminated in the Russian spy radiation poisoning case has doubled to 12 and is likely to rise again, British Home Secretary John Reid said. He disclosed that two more jetliners have been caught up in the scare -- although one was later given a clean bill of health.
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The U.S. government should replace more than 1,000 irradiation machines used in hospitals and research facilities because terrorists could use the radioactive materials inside them to make "dirty" bombs, a government advisory panel has concluded.
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The scans do not appear to save lives and expose people to serious risks, researchers are reporting.
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Awareness of skin cancer is increasing but people are still not protecting themselves, warn experts.
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The Nuclear Regulatory Commission has concluded that it is unlikely significant amounts of radiation would be released in a deliberate crash of a jetliner into a nuclear power plant, but that engineering tests have not entirely ruled out the possibility of radioactive releases.
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Seattle scientists studying cancer rates among the victims of the 1986 Chernobyl nuclear plant explosion have found the first direct link between thyroid cancer risk and individual radiation exposures.
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Lack of sunlight may increase the risk of developing lung cancer, research suggests.
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More than 800 people in northern Sweden may have cancer as a result of the fallout that spewed over the region after the Chernobyl nuclear accident in 1986, according to a study by Swedish scientists.
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NEW YORK  - Two new studies suggest that  exposure to sunlight might not be as risky for cancer as is  generally believed.
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Patients and parents need more information on cancer risk from topical creams used to treat the skin condition eczema, a U.S. panel of medical experts said on Tuesday.
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A new study suggests that screening smokers and former smokers for lung cancer with CT scans does not save lives or prevent the disease to advance, and may lead to unneeded and harmful treatment.