Japan retail company Seven & I Holdings Co. says it will soon stop selling food products containing the trans fats that have been associated with high cholesterol and health problems like heart disease and hardening of the arteries. The parent company of Seven-Eleven convenience stores and various Japanese supermarkets and department stores, Seven & I says it will speed up efforts to remove trans fats from its own house brand products while asking food suppliers to follow suit. Until now, the company has been promoting products that are lower in trans fats. Japan's Consumer Affairs Agency has issued guidelines that require manufacturers of margarines to show trans-fat contents on product labels.