Dear Doctor: Everybody’s suddenly talking about how it’s important to eat some walnuts every day. Who decided that? Why is there always a new food fad?
Dear Reader: It’s a challenge to keep up with the latest superfood that’s going to change your life. Blueberries, broccoli, chia seeds, kale, acai berries, pea flour, fish oil, oatmeal — and the list goes on — have all had their day. Health promises…