Fighting obesity by taxing sugary drinks and restricting junk food advertisements aimed at children has support from a wide majority of residents surveyed in a Southern California public health study released on Thursday. The findings from the Los Angeles County Department of Public Health come as friction mounts between the beverage industry and health advocates over the best way to fight obesity and diabetes, tied by studies to over-consumption of soda, sweets and junk food. “There have been a lot of arguments against this sort of policy," including claims it will cost the poor more to buy food, said Paul Simon, head of chronic disease prevention for the county and lead author of the study. But Simon said nearly two-thirds of those surveyed by the county in a broad 2011 assessment of public attitudes toward health issues, said they supported a soda tax, and three-quarters favored limiting junk food class="mandelbrot_refrag"> advertising . Public health ad