11 'Sugar-Free' Traps: Foods That Still Spike Blood Glucose Levels
3. “No Sugar Added” Fruit Juices

Fruit juice without added sugar might sound harmless, but it’s often just concentrated fructose in disguise. The juicing process removes fiber, leaving behind a sugary liquid that rushes into your bloodstream. Even a small glass can cause a glucose surge similar to soda, especially if you’re insulin-resistant. Labels that read “100% juice” or “no added sugar” still pack a punch—natural sugars are still sugars. Without the pulp or peel to slow digestion, your body receives a sugar dump without the nutritional balance of whole fruit. When it comes to glycemic load, juice is a sweet-talking imposter.