Are boiled potatoes better than baked potatoes for blood sugar?

Generally, yes. Boiled potatoes tend to have a lower glycemic index than baked potatoes. The cooking method affects starch structure—boiling produces a form that digests more slowly. For even better results, cool boiled potatoes before eating to increase resistant starch content.

Does cooling potatoes reduce carbs?

Cooling doesn't reduce total carbohydrates, but it does convert some digestible starch into resistant starch. Resistant starch acts more like fiber—it passes through your digestive system without being fully absorbed, which blunts the blood sugar response.

Are sweet potatoes better than white potatoes?

Sweet potatoes have a slightly lower glycemic index, but the difference isn't dramatic. Both can be part of a blood-sugar-friendly eating pattern. What matters more is portion size, cooking method, and what you eat alongside them.

What's a reasonable portion size?

About ½ cup of cooked potatoes—roughly the size of your closed fist. This contains approximately 15-20 grams of carbohydrates. If you're using the plate method, potatoes should fill about ¼ of your plate.

Can I eat potatoes if I have prediabetes?

Yes. Having prediabetes doesn't mean you need to eliminate potatoes. The American Diabetes Association emphasizes that no single food is off-limits—managing blood sugar is about overall eating patterns, portions, and meal composition.

How to Cook Potatoes for Diabetics: 7 Methods to Reduce Blood Sugar Spikes

Potatoes can fit in a metabolic-health-friendly plate. Learn portion guidance, cooking methods, cooling for resistant starch, and smart pairings.