The big news from the 2015 Natural Products Expo West was that the American consumer is buying healthy foods at volumes never seen before. Health and wellness products are achieving three times the sales growth as conventional food products.A survey conducted by SuperMarket News found that 80 percent of surveyed food-industry wholesalers and retailers had sales growth in health and wellness products. A third of survey respondents reported an astounding 20 percent increase in annual sales!Gluten- and allergen-free is now top wellness trend