Hoe gevaarlijk is een lage dosis straling?

Een korte hoge dosis radioactieve straling verhoogt de kans op kanker. Maar of dat ook voor weinig straling geldt?PAGINA 4-5

Workers in protective clothing use a high pressure washer to decontaminate the roof of the Okumamachi office, located within the no-entry zone surrounding to the crippled Fukushima No. 1 nuclear power plant in Fukushima Prefecture, on Dec. 4, 2011. The government has started a full-scale decontamination work, a model project, to realize the return of residents of the no-entry zone to their homes. ( The Yomiuri Shimbun via AP Images ) ASSOCIATED PRESS