Nutrition trends come and go. As a registered dietitian and diabetes care and education specialist, I don’t pay much attention to trends simply because they’re popular. I’m interested in the ones backed by science, driven by changing consumer behavior, and beginning to show up in my patients’ shopping carts and questions during counseling sessions. Over the past several months, I’ve been following many of the products and innovations emerging across the nutrition industry, including those showcased at Natural Products Expo West. It’s been interesting to see which ideas appear to have staying power and which are likely to be passing…