A fasting sugar level around 170 means your diabetes is still not fully controlled, even while taking Janumet and Glimepiride regularly. This can happen for many reasons, including irregular meal timings, stress, poor sleep, lack of physical activity, weight gain, infections, or the body gradually becoming less responsive to the same treatment over time. Sometimes people follow medicines correctly but still have high sugar because food habits, portion size, late-night eating, or missed exercise affect blood sugar throughout the day. A fasting sugar this high may also suggest that your current dose or treatment combination needs review. Keeping meals balanced, reducing sweets and refined carbohydrates, walking daily, maintaining proper sleep, and monitoring sugar levels regularly may help improve control naturally. Taking medicines at the same time every day and avoiding skipped meals is also important. Your doctor may suggest checking HbA1c, kidney function, and daily sugar records before deciding whether any treatment adjustment is required. Inform your doctor if you develop excessive thirst, blurred vision, unusual tiredness, numbness, or frequent urination.