Excess A1C is a sign of bad sugar management like diabetes. Food is information that then patterns, how our genes are expressed. What you want to do is eat food compatible with genes that tell you're having a good day and not doing battle with your environment.
Dr. Jeffrey Bland is a highly respected thought leader who has spent more than four decades focused on the improvement of human health through systems biology. He is known worldwide as the founder of the Functional Medicine movement.