Washington: Whey protein used to be considered a mere byproduct of cheesemaking, but the dietary supplement is now coveted due to high-protein diets popularized across social media -- an explosion that is radically reshaping the American dairy industry.
Long sold as a mix-in powder or protein bar, whey can now be found across US supermarket shelves in products ranging from breakfast cereals and bagels to pretzels and instant noodles.
