Carnitine Deficiency: What Is It, Causes, Symptoms, and More Osmosis The Role of Lifestyle Interventions in PCOS Management: A Systematic Review Carnitine traffic and human fertility ScienceDirect L Carnitine: Benefits, Uses, and Side Effects Lifespan Research Institute There's a reason L carnitine keeps showing up in PCOS research Because PCOS is closely tied to insulin resistance, inflammation, and metabolic dysfunctionand L carnitine plays a role in energy metabolism and fat utilization.