Study conducted in Nevada casinos claims DNA risk from secondhand smoke ASSOCIATED PRESS RENO, Nev. (AP) - Five years of research led by a University of Nevada, Reno department head in Reno and Las Vegas casinos have concluded there is a direct correlation between exposure to secondhand smoke in the workplace and damage to the employees' DNA. "The more they were exposed to environmental tobacco smoke, the more the DNA damage, and that's going to lead to a higher risk of heart disease and cancer down the road," said Chris Pritsos. Funded by a $2.5 million grant from the National...