Carnitine Deficiency an overview ScienceDirect Topics l Carnitine and heart disease ScienceDirect Role of carnitine in disease Nutrition & Metabolism Springer Nature Link Carnitine Deficiency: What You Need to Know The Medical Biochemistry Page If you are like a lot of people, you may have never heard of carnitine but this important nutrient is critical for our body's ability to optimally burn fat required for energy.