Why a national cancer study near US reactors must be conducted before any new expansion of nuclear power

The last and only national study of the health risks posed by existing US nuclear reactors was conducted in the late 1980s. But by then, many of the 62 nuclear plants had only been operating for a relatively small number of years, not enough time for the effects of radiogenic exposure to appear in workers and the nearby population. An attempt to launch a new study in 2009 was ultimately cancelled despite many reported cases of cancer and other diseases.