Objective To understand residents' knowledge,attitude and practice towards nutrition labels and their behaviors of food consumption in Guangzhou,and provide gist for carrying out dietary guidance. Methods Home telephone interviews were conducted on permanent residents over 16-year-old in 11 districts of Guangzhou. Results 40. 5% of Guangzhou residents could understand some or all the information on nutrition labels. 50. 9% of residents didn't know whether trans-fatty acids should be labeled on nutrition lab...