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What are the side effects of eating barley every day?

4 min read

A 2025 article in Health.com confirms that barley is a source of fructans, carbohydrates that can cause gas, abdominal pain, and bloating in some people. While a nutritious whole grain, understanding the side effects of eating barley every day is important for proper dietary management.

Quick Summary

Potential risks of eating barley daily include digestive discomfort from high fiber and fructans, allergic reactions, and health issues for those with gluten sensitivity or celiac disease.

Key Points

  • Digestive Issues: High fiber and fructans in barley can cause bloating, gas, and abdominal discomfort, especially when intake is increased rapidly.

  • Gluten Risk: Barley contains gluten and must be avoided by individuals with celiac disease or non-celiac gluten sensitivity to prevent serious health issues.

  • Allergic Reactions: Some people may experience specific barley allergies, leading to skin rashes, respiratory problems, or in severe cases, anaphylaxis.

  • Medication Interaction: Barley's blood-sugar-lowering effect requires careful monitoring for people with diabetes on medication to avoid hypoglycemia.

  • Pregnancy Warning: Large amounts of barley sprouts are considered possibly unsafe during pregnancy and should be avoided.

  • Gradual Introduction: To minimize side effects, introduce barley into your diet slowly and drink plenty of water.

In This Article

Barley is a nutrient-rich whole grain celebrated for its numerous health benefits, including supporting heart health and aiding digestion. However, like any food consumed frequently, it's crucial to be aware of the potential drawbacks, particularly when eating barley every day. For most healthy individuals, moderate daily intake is safe, but certain people, and those who consume excessive amounts, may experience negative side effects.

Digestive Discomfort from High Fiber and Fructans

Barley is an excellent source of dietary fiber, which is beneficial for digestive health, but a rapid increase in fiber intake can lead to unwanted gastrointestinal symptoms. Additionally, barley contains fructans, a type of fermentable carbohydrate that can be problematic for some digestive systems.

  • Bloating and Gas: The fermentation of fiber and fructans by gut bacteria can produce gas, leading to feelings of bloating and discomfort. This is especially true for individuals with irritable bowel syndrome (IBS).
  • Abdominal Pain: In some cases, the gas and bloating can cause cramping or abdominal pain, particularly for those with sensitive digestive tracts.
  • Changes in Bowel Movements: Too much fiber too quickly can cause either constipation (if fluid intake is insufficient) or diarrhea, as the body adjusts to the change.

To mitigate these effects, it is recommended to introduce barley into your diet gradually and ensure you are drinking plenty of fluids to help the fiber move through your system.

Risks for Individuals with Gluten Sensitivity

For a significant portion of the population, barley poses a serious health risk because it contains gluten. This affects anyone with gluten-related disorders.

  • Celiac Disease: Barley contains hordein, a protein belonging to the gluten family that can trigger an immune response and cause severe intestinal damage in people with celiac disease. For these individuals, daily barley consumption is strictly prohibited.
  • Non-Celiac Gluten Sensitivity: This condition can cause similar digestive symptoms, as well as headaches, fatigue, and skin rashes, after consuming gluten. Daily barley intake would likely exacerbate these symptoms significantly.
  • Wheat Allergy: Some individuals with a wheat allergy may also need to avoid barley due to cross-reactivity.

Allergic Reactions Beyond Gluten

While less common, some people may have a specific allergy to barley, which can manifest in various ways and is different from a gluten-related disorder.

  • Skin Reactions: Symptoms can include rashes, itching, and hives.
  • Respiratory Symptoms: Inhaling barley flour, a risk for bakers, can lead to asthma-like symptoms or more serious reactions.
  • Anaphylaxis: In rare, severe cases, a barley allergy can cause anaphylaxis, a life-threatening allergic reaction.

Interactions with Medications and Other Health Conditions

Daily barley intake may require special consideration for individuals with specific health concerns, especially those on medication.

  • Diabetes Medication: Barley can significantly lower blood sugar levels. People taking insulin or other diabetes medications should monitor their blood sugar carefully and consult a doctor before incorporating barley daily to avoid hypoglycemia.
  • Medication Absorption: The high fiber content in barley can interfere with the absorption of oral medications. It's often recommended to consume barley at least an hour after taking oral drugs to ensure their effectiveness.
  • Pregnancy: While culinary amounts are generally safe, high amounts of barley sprouts are possibly unsafe and should be avoided during pregnancy.
  • Kidney Stones: Barley contains oxalates, which may increase the risk of kidney stones in susceptible individuals.

Comparison Table: Benefits vs. Risks of Daily Barley

Aspect Potential Benefits of Daily Intake Potential Risks of Daily Intake
Digestion High fiber promotes regularity and healthy gut flora. Can cause bloating, gas, and abdominal pain, especially with sudden increases.
Heart Health Beta-glucan fiber helps lower bad (LDL) cholesterol. Excessive consumption is high in calories and should be accounted for in calorie-restricted diets.
Blood Sugar Lowers blood glucose and insulin levels, reducing diabetes risk. Can cause hypoglycemia if taken with diabetes medication without medical supervision.
Gluten Content Not applicable; contains gluten. Severe health risks for individuals with celiac disease, non-celiac gluten sensitivity, or wheat allergy.

How to Minimize Potential Side Effects

Incorporating barley into your diet safely involves a few key steps:

  • Start Slowly: Introduce barley gradually to allow your digestive system to adapt to the increased fiber content. Begin with small portions and increase slowly over time.
  • Increase Fluid Intake: Always drink plenty of water throughout the day to help the high fiber content pass smoothly through your digestive tract and prevent constipation.
  • Know Your Body: Be aware of any sensitivities you may have. If you experience persistent bloating, gas, or other symptoms, you may have a gluten sensitivity or barley intolerance.
  • Consult a Professional: If you have celiac disease, a gluten sensitivity, diabetes, or are on medication, speak with a doctor or dietitian before making barley a regular part of your diet.

Conclusion

For most people, eating barley every day in moderation is a healthy choice, offering significant benefits for heart health, digestion, and blood sugar control. The key to avoiding potential side effects is a mindful and cautious approach. For individuals with celiac disease, a gluten sensitivity, or specific allergies, barley must be completely avoided. Others should introduce it slowly, increase their fluid intake, and be aware of their body’s unique response. The side effects of eating barley every day are manageable for many, but awareness and moderation are paramount to enjoying this nutritious grain safely. You can find more information about the benefits of barley and how to incorporate it into your diet safely at Healthline.com.

Frequently Asked Questions

Yes, especially if you suddenly increase your intake. Barley's high fiber and fructan content can cause bloating, gas, and abdominal pain as your digestive system adjusts.

No, barley contains gluten and is not suitable for individuals with celiac disease. Its consumption can trigger an autoimmune response that damages the small intestine.

Yes, barley can lower blood sugar levels. People with diabetes who are on medication should consult a healthcare provider before consuming barley daily to avoid hypoglycemia.

While barley in food amounts is likely safe, excessive amounts of barley sprouts are possibly unsafe during pregnancy. Pregnant women should exercise caution.

Symptoms can range from mild skin rashes, itching, and respiratory issues (like baker's asthma) to severe, life-threatening anaphylaxis.

Yes, the high fiber content in barley can decrease the absorption of oral medications. It is best to take medications at least one hour before or after consuming barley.

Introduce barley into your diet gradually to allow your body to adapt. Drinking plenty of water is also crucial to help fiber pass through the digestive tract smoothly.

References

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Medical Disclaimer

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