Learning to Listen to the Body: A Conversation with Karen Jacobson

Functional medicine expert Karen Jacobson explains why calorie restriction fails and how nourishment, gut health, and meal timing reduce inflammation and restore metabolic balance.

My conversation with Karen Jacobson, Head of Nourishment for the Reverse Aging Challenge, reminded me how much confusion people live with when it comes to food and health. Karen’s own story began with years of doing all the “right” things. She restricted calories, exercised more, joined slimming clubs, and followed every mainstream rule. Yet she remained inflamed, exhausted, and stuck. Like so many people, she carried the silent question: “What is wrong with me?” Everything changed when she discovered functional medicine. For the first time, someone helped her look beneath the symptoms and into the root causes driving them. Instead of focusing on calories, they explored why her body responded the way it did. That curiosity reshaped her life. She began studying how real food delivers biological information the body understands, while ultra processed foods create confusion and inflammation…