Acetylcarnitine Wikipedia 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. Insulin resistance does not just raise your blood sugar. It is quietly starving your brain. Most people spend years attributing their cognitive decline to stress or aging. The science offers a different Muscle Specific Deletion of Carnitine Acetyltransferase Compromises Glucose Tolerance and Metabolic Flexibility ScienceDirect