11 'Sugar-Free' Traps: Foods That Still Spike Blood Glucose Levels

4. Sugar-Free Yogurts

Sugar-free yogurts are often loaded with artificial sweeteners, but that’s not the full story. Many also contain starches, milk solids, or thickeners like modified corn starch—all of which can spike blood glucose. These ingredients are used to recreate the creamy texture and mouthfeel lost when sugar is removed, but your body still treats them like quick carbs. Some yogurts even have more additives than dairy content, turning a seemingly healthy choice into a processed minefield. If your goal is stable energy or metabolic health, opt for plain, unsweetened Greek yogurt and add real fruit for fiber-rich sweetness you can control.