Keeping blood sugar stable is essential for long-term health, and research suggests that certain natural foods can help. According to a report from Knowridge, fiber-rich foods like oats, beans, and whole grains slow digestion, preventing sudden sugar spikes. Apple cider vinegar has also been linked to better blood sugar control when taken before meals, while cinnamon may enhance insulin sensitivity. Nuts such as almonds and walnuts provide healthy fats and protein that help balance blood sugar, and berries—especially blueberries—contain antioxidants that improve insulin response. Leafy greens like spinach and kale supply magnesium, a mineral often low in people with diabetes. Though not a cure, these foods can support better glucose regulation when combined with healthy habits.