ScienceDaily: Telltale Toenails: Dartmouth Study Finds That Arsenic Inhibits DNA Repair

ScienceDaily: Telltale Toenails: Dartmouth Study Finds That Arsenic Inhibits DNA Repair: "'The DNA repair machinery normally protects us from DNA-damaging agents, such as those found in cigarette smoke,' says Andrew. 'The concern is that exposure to drinking water arsenic may exacerbate the harmful effects of smoking or other exposures.'"