 They are foods we all recognize, like sausages, mass-produced breads, carbonated drinks or breakfast cereals, even if we don't recognize many of the ingredients. Research being presented at the International Congress on Obesity in Sao Paulo, Brazil, says a massive public health campaign against them is needed. Ultra-processed foods are linked to about 25 chronic diseases, including obesity, type 2 diabetes and high blood pressure. And they now provide about 60% of the calories consumed in the U.S. Michael Toscano, CBS News.