"The U.S. Nuclear Regulatory Commission is considering a move to eliminate the “Linear No-Threshold” (LNT) basis of radiation protection that the U.S. has used for decades and replace it with the “radiation hormesis” theory—which holds that low doses of radioactivity are good for people.
"In the wake of the Manhattan Project, the U.S. crash program during World War II to build atomic bombs and the spin-offs of that program—led by nuclear power plants, there was a belief, for a time, that there was a certain “threshold” below which radioactivity wasn’t dangerous.
"But as the years went by it became clear there was no threshold—that any amount of radiation could injure and kill, that there was no “safe” dose." Karl Grossman, Beyond Nuclear board member and contributor to Counterpunch