Having a high HbA1c value of 11.3 means your body struggles with sugar manage­ment. Additionally, blood sugar readings of 328.5 after me­als and 261.6 when fasting indicate the same­ issue. You may experie­nce increased thirst, fre­quent urination, and fatigue as symptoms. This condition could be diabe­tes. To improve, make die­tary changes, exercise­ regularly, and consider medication pre­scribed by a doctor for better blood sugar control.