Jonny Bowden, PhD, CNS, is a board-certified nutritionist and the best-selling author of 14 books. His latest is Smart Fat: Eat More Fat, Lose More Weight, Get Healthy Now (written with Steven Masley, MD). Visit him at jonnybowden.com. Have a question for Jonny? Send it to firstname.lastname@example.org. Write “Health Q&A” in the subject line.