When you have PCOS, your cells become less responsive to insulin. In such a case, your body is not able to absorb glucose properly and can lead to increased blood sugar levels. PCOS inositol increases your body’s responsiveness to the insulin. It acts as a link between a deficiency of inositol in the body and insulin resistance. It has been found in many studies that when you have PCOS, your body is deficient in inositol.