Vitamin D and dirty bombs

Radiological health expert Daniel Hayes of the New York City Department of Health and Mental Hygiene suggests that a form of vitamin D could be one of our body's main protections against damage from low levels of radiation. Writing in the International Journal of Low Radiation, he explains that calcitriol, the active form of vitamin D, could protect us against background radiation. He also suggests that and could be used as a safe protective agent before or after a low-level nuclear incident or the detonation of a so-called "dirty bomb" by terrorists.