Coca-Cola's CEO said the drinks company is looking at one viral health trend this year. Speaking with CNBC at the World Economic Forum in Davos, Switzerland, CEO James Quincey said fiber might be the next big thing for Coca-Cola."So you've got a lot of focus on refreshment and a lot of focus on protein, and people are definitely seeing more protein," Quincey said. "We might see fiber creep in this year." He said fiber can be put into anything because it's soluble in beverages. He gave the example of the D ...