Carnitine has a central role in fat metabolism. During the overnight fasted state and in exercise performed at low to moderate intensity, long chain fatty acids serve as the primary energy source for Molecular Reproduction & Development Reproductive Biology Journal Wiley Online Library Role of carnitine in disease Nutrition & Metabolism Springer Nature Link Medium chain fatty acid oxidation is independent of l carnitine in liver and kidney but not in heart and skeletal muscle American Journal of Physiology Gastrointestinal and Liver Physiology American Physiological Society A schematic diagram of the metabolic roles of carnitine in skeletal Download Scientific Diagram L Carnitine plays an important role in the larger metabolism equation: helping your body use fat efficiently as fuel. Learn more about the science on this week's post on The Wellness Edit.