This is Rob Stein in The Washington Post, via Robin Hanson:
Although radiation escaping from a nuclear power plant catastrophe can increase the risk of many cancers and other health problems, stress, anxiety and fear ended up in many ways being much greater long-term threats to health and well-being after Chernobyl, Three Mile Island and other nuclear accidents, experts said Monday.
“The psychological effects were the biggest health effects of all — by far.” … “After almost every radiological emergency, anyone or anything seen as or perceived as associated with the emergency came to be seen by others as tainted or something to be feared and even the object of discrimination.” … [After] a much less severe nuclear accident in 1999 in Tokaimura, Japan, … people in other parts of Japan refused to buy products from that region, and travelers were turned away from hotels and asked not to use public baths and swimming pools. … Studies of more than 80,000 survivors of the Hiroshima and Nagasaki blasts have found that … only about 500 [cancer] cases could be attributed to the radiation exposure the people experienced.