Drinking water in itself does not directly lower blood glucose levels. However, staying well-hydrated can help your kidneys function properly and may aid in the excretion of excess glucose through urine.
When blood glucose levels are high, the kidneys may filter out some of the excess glucose into the urine, which can lead to increased urination (polyuria). Drinking more water can help replenish fluids lost through urination and prevent dehydration but it won't specifically lower your blood sugar levels.
For those managing diabetes, it's essential to focus on a balanced diet, regular physical activity, and medications as prescribed for blood glucose control. If you have concerns about your blood sugar levels or hydration, it is important to consult with a healthcare professional.