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The ultimate diet food — but rice cakes are highly processed and spike blood sugar fast.
FoodLens verdict
🤔 Occasionally
Rice cakes have been a diet food staple for decades. Low calorie, light, seemingly clean — they feel like the responsible snack choice. But rice cakes are more processed than they look, and their effect on blood sugar is worse than most people realise.
Rice cakes are made by exposing rice to high heat and pressure until it puffs up and binds together. This process dramatically raises the glycaemic index of the rice — plain white rice has a GI of around 64, while rice cakes score around 82, higher than white bread. The processing that makes them light and crispy also makes them metabolise faster.
Plain rice cakes are level 3. Flavoured versions — cheese flavour, salt and vinegar, sweet chilli — add artificial flavourings, glucose syrup and various additives that push them toward level 4. The flavouring transforms a moderately processed product into something closer to a crisp.
Rice cakes are low in calories but they are also low in protein, fat and fibre — the three things that make you feel full. The rapid blood sugar spike followed by a crash tends to make you hungrier faster than a more balanced snack would. As a weight loss food, they are less effective than their reputation suggests.
Plain nuts provide protein, fat and fibre that keep you full much longer. Oatcakes have more fibre than rice cakes and a lower GI. Vegetables with hummus, plain yogurt, or a piece of fruit all provide more sustained energy than rice cakes with less processing.
Rice cakes are not terrible — but they are not the clean diet food they are marketed as. They are moderately processed, spike blood sugar quickly, and do not keep you full. For a genuinely clean snack, plain nuts or vegetables are a better choice.