Massachusetts is considering following New York City's lead and banning restaurants from serving artery-clogging artificial trans fats - a move some lovers of greasy food are giving a thumbs-down. State Rep. Peter Koutoujian, a Democrat from Waltham, co-chairman of the Legislature's Joint Committee on Public Health, filed a bill yesterday to make Massachusetts the first state to impose the ban. "It's basically killing people," Koutoujian said. He said health officials have know about the "evils" of trans fat for years. He said two recent developments - greater access to non-trans-fat cooking oils and a move by major restaurant chains to...