In a surprising nutritional finding, experts say that reheating leftover pasta after it has cooled for about 24 hours may offer health benefits, especially for people managing blood sugar levels.

Cooling and reheating starchy foods like pasta changes how the body digests carbohydrates, helping limit post-meal glucose spikes.

🍝 Why Does Pasta Change After Cooling?

Plant-based nutritionist Ashley Kitchens explains that when pasta is cooked, cooled, and reheated, some of its digestible starch turns into resistant starch.

Resistant starch:

• Slows digestion.

• Reduces glucose absorption.

• Acts similarly to fiber.

• Feeds beneficial gut bacteria instead of converting quickly into sugar.

🧬 What Is Resistant Starch?

Resistant starch forms through a process called retrogradation. When pasta is cooked, starch becomes gelatinized and easy to digest. After cooling for 24 hours or more, part of the starch restructures into a form the body struggles to digest fully.

This results in less sugar entering the bloodstream.

❤️ Health Benefits of Reheated Pasta

• Lower blood sugar spikes.

• Fewer digestible calories.

• Improved insulin response.

• Better gut health.

• Reduced metabolic stress.

Studies from the University of Surrey also showed lower glucose and insulin responses when people ate cooked, cooled, and reheated pasta, especially when prepared al dente.

⚠️ Is Pasta Suddenly “Healthy”?

Experts clarify that reheated pasta is not sugar-free, but it reduces glucose impact.

It should still be combined with:

• Portion control.

• Fiber intake.

• Balanced meals.

• Physical activity.

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