Skip to content

Are ancient grains better for blood sugar?

4 min read

According to a recent review of 29 randomized controlled trials, ancient grains, such as oats, brown rice, and millet, showed promising results in improving various markers for type 2 diabetes. This has led many to wonder: are ancient grains better for blood sugar control compared to their modern counterparts?

Quick Summary

Ancient grains, prized for their higher fiber and phytochemical content, can help regulate blood sugar more effectively than refined modern grains. Their ability to slow digestion and mitigate blood sugar spikes makes them a beneficial dietary component for improving glucose control and overall metabolic health.

Key Points

  • Higher Fiber and Nutrients: Ancient grains are less processed and have higher levels of fiber, protein, and micronutrients than modern refined grains.

  • Slower Digestion: The high fiber in ancient grains slows down the absorption of carbohydrates, which helps prevent sharp blood sugar spikes.

  • Lower Glycemic Index: Many ancient grains have a lower GI score, meaning they release sugar more gradually and are more suitable for glycemic control.

  • Rich in Phytochemicals: Ancient grains contain anti-inflammatory and antioxidant phytochemicals that help improve metabolic health and combat oxidative stress.

  • Proven Benefits: Studies have shown that consuming certain ancient grains like oats and brown rice can improve various diabetes markers, including fasting blood glucose and HbA1c.

  • Incorporate Whole Grains: To maximize benefits, choose minimally refined ancient grains like oats, quinoa, and brown rice, and practice portion control.

In This Article

Understanding the 'Ancient' Difference

Ancient grains are varieties of cereals and pseudo-cereals that have remained largely unchanged by modern breeding practices over centuries. Unlike highly processed modern grains, which are often stripped of their most nutritious parts, ancient grains retain their natural, whole-grain structure. This minimal processing is key to their superior nutritional profile, which includes higher concentrations of fiber, protein, and beneficial phytochemicals.

The Role of Fiber and Phytochemicals

The benefits of ancient grains for blood sugar are largely attributed to their fiber and phytochemical content.

  • High Fiber Content: The dietary fiber in ancient grains, especially soluble fiber like the beta-glucan found in oats, slows down the digestion and absorption of carbohydrates. This prevents the rapid spike in blood sugar that typically follows the consumption of refined carbohydrates.
  • Phytochemical Power: Ancient grains are rich in phytochemicals such as flavonoids, phenolic acids, and phytosterols, which have antioxidant and anti-inflammatory properties. Oxidative stress and inflammation are known to contribute to the progression of diabetes, so these compounds can help mitigate damage and improve overall metabolic health.
  • Lower Glycemic Index: Many ancient grains have a lower glycemic index (GI) compared to refined grains. The GI measures how quickly a food raises blood glucose levels. Foods with a lower GI are absorbed more slowly, leading to a more gradual release of sugar into the bloodstream.

Comparing Ancient vs. Modern Grains for Glycemic Control

While all whole grains are beneficial, studies suggest ancient grains may offer a slight edge due to their specific composition.

Feature Ancient Grains (e.g., Einkorn, Spelt, Millet) Modern Grains (e.g., Modern Wheat, White Rice)
Processing Level Minimal processing, retain all parts of the kernel. Often highly refined, removing the bran and germ.
Fiber Content Higher levels of dietary fiber, including soluble and insoluble types. Lower fiber content, especially after refining.
Nutrient Density Superior concentrations of minerals like zinc, iron, and manganese. Nutrients are often stripped and then artificially added back (enriched).
Glycemic Index Generally lower GI, leading to slower glucose release. Higher GI when refined, causing quicker blood sugar spikes.
Phytochemicals Higher levels of beneficial antioxidant and anti-inflammatory compounds. Lower concentrations of phytochemicals due to selective breeding.

Best Ancient Grains for Blood Sugar

Not all ancient grains are the same, and some offer more benefits for glycemic control than others. Incorporating a variety of these grains can provide a wider range of nutrients.

  • Oats: Well-researched for their ability to significantly improve cholesterol and fasting blood glucose levels, largely due to their high beta-glucan fiber content.
  • Brown Rice: In contrast to its white counterpart, brown rice has been shown to improve HbA1c (a long-term measure of blood glucose control) and body mass index.
  • Millet: This grain has demonstrated positive effects on body weight, though more research is needed to confirm its direct impact on specific diabetes markers.
  • Buckwheat: A pseudo-cereal known to improve fasting insulin levels and total cholesterol.
  • Einkorn: An ancient wheat variety with a different gluten structure and higher levels of micronutrients and antioxidants compared to modern wheat, which can lead to better glycemic control.
  • Chia Seeds: While a meta-analysis noted mixed results on direct diabetes markers, chia seeds are a fantastic source of fiber and healthy fats that slow down digestion and stabilize blood sugar.

How to Incorporate Ancient Grains into a Diabetes-Friendly Diet

Adding these healthy grains to your meals is simple and delicious. Here are some practical tips:

  1. Start your day with oats. Enjoy a bowl of oatmeal topped with nuts and berries for a fiber-rich breakfast that promotes stable blood sugar throughout the morning.
  2. Replace refined grains. Use brown rice or quinoa as a base for stir-fries, bowls, and salads instead of white rice.
  3. Experiment with flours. Try baking with flours made from einkorn or buckwheat to boost the nutritional value of your bread, pancakes, and muffins.
  4. Bulk up meals. Add cooked millet or farro to soups and stews for extra fiber and texture.
  5. Use seeds as a topping. Sprinkle chia seeds over yogurt or incorporate them into smoothies for a fiber boost that helps moderate glucose spikes.

For additional guidance, the American Diabetes Association provides resources on creating a balanced, whole-grain-inclusive diet.

Conclusion

When asking if ancient grains are better for blood sugar, the evidence points to a strong yes, especially when compared to refined modern grains. Their superior fiber and phytochemical content, combined with a generally lower glycemic index, contributes to improved glucose metabolism and stable blood sugar levels. While ancient grains are a valuable tool for managing diabetes, they should be consumed as part of a balanced, whole-food diet that also includes plenty of vegetables, lean proteins, and healthy fats. Always monitor portion sizes and consult a healthcare professional for personalized dietary advice, but swapping modern for ancient grains is a solid step toward better metabolic health.

Frequently Asked Questions

For managing diabetes, some of the most effective ancient grains include oats, brown rice, millet, buckwheat, and quinoa. These are particularly beneficial due to their high fiber content and lower glycemic index.

Ancient grains differ primarily in their processing and genetic modification. Unlike modern refined grains, ancient varieties are minimally processed, retaining their nutritious bran and germ, and have undergone less genetic modification, resulting in a higher concentration of fiber and phytochemicals.

Yes, people with diabetes can and are often encouraged to eat ancient grains. Their higher fiber content helps manage blood sugar levels and can be a healthy part of a balanced, diabetes-friendly diet.

While many ancient grains have a lower glycemic index (GI) compared to refined grains, not all are identical. The GI can vary based on the specific grain and how it is prepared, so it is important to be mindful of portion sizes.

The fiber in ancient grains slows down the digestive process, which in turn slows the release of glucose into the bloodstream. This prevents rapid spikes in blood sugar and promotes more stable glucose levels over time.

Yes, ancient grains are a source of carbohydrates, but they are generally complex carbohydrates. This means they are digested more slowly than simple carbohydrates, providing sustained energy and better blood sugar regulation.

Replacing refined grains with ancient grains is a positive step. However, a balanced diet is key. Incorporate ancient grains along with other healthy foods like vegetables, lean proteins, and healthy fats while monitoring your overall carbohydrate intake.

References

  1. 1
  2. 2
  3. 3
  4. 4
  5. 5

Medical Disclaimer

This content is for informational purposes only and should not replace professional medical advice.