In this image taken on Tuesday, May 15, 2012, Amanda Perry mixes a protein shake for lunch at her home in Tyngsborough, Mass. Perry, a gym owner and personal trainer, blends a vegan protein powder with almond milk, natural peanut butter, ice and a banana as a drink in her daily diet. A surge in protein as both a nutrient and a marketing element has been added to the American diet. (AP Photo/Charles Krupa)
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