Your kidneys do more than filter waste: Here’s how they help control blood sugar

The kidneys are often overlooked when discussing blood sugar regulation, despite playing a crucial role beyond just filtering waste. These organs actively participate in glucose management through processes like renal gluconeogenesis and glucose reabsorption. Malhotra, a Consultant Dietician & Diabetes Educator, explains that healthy kidneys contribute to glucose regulation, and even subtle shifts in kidney function can influence blood sugar levels.

Despite the well-known link between diabetes and kidney disease, the relationship is bidirectional. Changes in kidney physiology can impact blood sugar regulation long before someone is diagnosed with kidney disease. Malhotra emphasizes that early reductions in kidney efficiency can alter insulin clearance and tissue sensitivity, promoting insulin resistance over time.

Additionally, minor inefficiencies in kidney filtration can disrupt sodium and fluid balance, indirectly affecting glucose metabolism. The relationship between kidney health and blood sugar is complex, with each influencing the other. While poor blood sugar can damage kidneys over time, early kidney inefficiency can also set the stage for worsening glucose control without showing up on standard screenings.

To support both kidney health and healthy blood sugar, Malhotra recommends staying hydrated, reducing sodium and ultra-processed foods, exercising regularly, monitoring blood pressure, and having kidney function tests if at higher risk. Adhering to these habits can prevent or slow down the progression of both conditions.