...Exercising well, getting enough sleep, and eating a nutritious diet high in unsaturated fats and soluble fiber may help improve insulin sensitivity in people with and without diabetes. Taking walks regularly or staying active throughout the day can significantly improve blood sugar regulation. Certain dietary supplements may also be beneficial such as; eating more fruits, vegetables, and whole grains, reducing your intake of processed foods and added sugar, consuming lean, protein-rich foods, like chicken, fish, and plant-based proteins.