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Nutrition

Does oatmeal raise blood sugar?

Published: Apr. 28, 2025

Updated: Apr. 29, 2025

2 min read

person pouring oatmeal into bowl
The content in this article should not be taken as medical advice. Please consult with your healthcare provider regarding your individual health needs.
Oatmeal is often praised as a heart-healthy, fiber-packed breakfast choice. When it comes to blood sugar, things aren’t quite so straightforward. So, does oatmeal raise blood sugar? The short answer is yes, it can, but that’s not the whole story.

Understanding oatmeal and blood sugar levels

Like all carbohydrate-containing foods, oatmeal has the potential to raise blood sugar levels. Your body breaks down carbohydrates into glucose, which then enters your bloodstream. However, not all oatmeal is created equal, and the way you prepare and pair it with other foods can make a big difference in how your body responds.

Types of oatmeal and their effects on blood sugar

Oatmeal comes in many forms: steel-cut, old-fashioned (rolled), instant, and flavored varieties. The level of processing impacts how your body digests oatmeal.
  • Minimally processed forms of oatmeal, like steel-cut and old-fashioned oats, contain more fiber and take longer to digest, which can improve blood sugar management and keep you feeling full longer.
  • More heavily processed forms of oatmeal, like instant and flavored oatmeal, often contain added sugars. This means that fiber and other nutrients may be lost during the extra processing, leading to potential blood sugar spikes.

How to enjoy oatmeal without a blood sugar spike

If you love oatmeal but want to avoid sharp blood sugar increases, here are a few tips:
1. Choose minimally processed oats
Go for steel-cut or old-fashioned oats over instant varieties to maximize fiber content.
2. Watch portion sizes
Even with whole oats, eating more than the recommended serving size may lead to elevated, prolonged blood sugar levels.
3. Be mindful of toppings
Ingredients like sugar, honey, dried fruit, and even some milks add extra carbohydrates, which can contribute to blood sugar spikes.
4. Pair oatmeal with protein and healthy fats
Replacing high-sugar toppings with nutrient-dense toppings can help balance blood sugar levels. Try mixing in:
  • Nuts like almonds, pistachios, pecans, or walnuts
  • Unsweetened almond or nut-based milk
  • Chia seeds or flaxseeds for extra fiber and omega-3s
  • Fresh berries like blueberries or strawberries (lower in sugar than dried fruit)
  • A dollop of plain Greek yogurt for added protein

Personalize your oatmeal experience with Stelo

Blood sugar responses can vary from person to person, which is why tracking your glucose levels with a biosensor like Stelo can provide valuable insights, allowing you to understand how different food choices affect your body.
With mindful choices and a little experimentation, you can enjoy oatmeal in a way that supports stable blood sugar levels and overall health.


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