As bitter winds blow around cesium and other radioactive particles spewed from the nearby Fukushima No. 1 nuclear power plant's reactors, Naoto Matsumura lights a cigarette, which he considers relatively good for his health.

"I would get sick if I stopped smoking; I have a lot to worry about," says Matsumura, 52, who reckons he is the only person still living within a 20-km radius of the world's worst atomic disaster since Chernobyl.

According to reports from Japan's Nuclear and Industrial Safety Agency published in August, following the Great East Japan Earthquake on March 11, and subsequent explosions at three reactors about 13 km from Matsumura's door, the plant operated by Tokyo Electric Power Co. (Tepco) has released 168 times more radiation than the atomic bombs that razed Hiroshima and Nagasaki in 1945.