Last summer, the Health Department asked New Yorkers a bold question: Are you pouring on the pounds? The question – accompanied by an eye-catching image of a soft drink turning to blubber as it gushes into a tumbler – has appeared on subway posters, educational brochures and websites since the campaign started in August. Now comes the sequel – a cheeky Internet video that uses similar imagery to show how the empty calories in sugary beverages can add up. Over the course of a year, drinking one soda a day can make you 10 pounds fatter, fostering obesity and contributing to health problems such as diabetes, asthma and heart disease.