gbrumfiel writes: "Experts believe that the many thousands who fled from the Fukushima nuclear disaster received very low doses of radiation. But that doesn't mean there won't be health consequences. Nature magazine travelled to Fukushima prefecture and found evidence of an enormous mental strain from the accident. Levels of anxiety and PTSD-like symptoms are high among evacuees. Researchers fear that, in the long run, the mental problems could lead to depression and substance abuse among those who lost their homes. In other words, even if no one develops cancer as a direct result of radiation, the health effects could still be very real."