Raw onions are a common ingredient in many diets and have been linked to various health benefits, but for some individuals, they can cause digestive discomfort or allergic reactions. Here’s a closer look at how raw onions can affect the body:

1. High in Sulfur Compounds

• Effect: Onions contain sulfur compounds that can boost immune health and have antioxidant properties. However, these sulfur compounds can also cause gastrointestinal discomfort in people with sensitive stomachs, leading to bloating, gas, and heartburn.

2. Rich in Antioxidants

• Effect: Onions are packed with antioxidants, especially quercetin, which helps reduce inflammation and fight free radicals. This can support heart health, improve circulation, and even reduce allergy symptoms.

3. Supports Heart Health

• Effect: Onions contain compounds that may help lower blood pressure and reduce cholesterol levels. The sulfur compounds in onions can also prevent blood clot formation, contributing to heart health.

4. Gut Health and Prebiotic Fiber

• Effect: Raw onions are a source of prebiotics, which can promote healthy gut bacteria. However, they can also cause digestive issues like gas or discomfort for people with irritable bowel syndrome (IBS) or sensitive stomachs.

5. Potential for Allergic Reactions

• Effect: Some people may experience mild allergic reactions to raw onions, such as skin rashes, itchiness, or digestive upset. In severe cases, onions can trigger anaphylaxis, though this is rare.

6. Blood Sugar Levels

• Effect: The compounds in onions may help regulate blood sugar, which is beneficial for people with diabetes. However, if you’re on medication for blood sugar, eating large amounts of onions could potentially interact with your medication.

7. May Cause Bad Breath and Body Odor

• Effect: The sulfuric compounds in onions can contribute to bad breath and, in some cases, body odor. The odor compounds can linger in your bloodstream and excrete through your lungs and skin.

8. Kidney and Liver Considerations

• Effect: While onions are generally healthy, people with kidney issues should be cautious, as certain compounds can be hard to process if kidney function is compromised.

Takeaways:

Eating raw onions is safe and beneficial for most people, but for some, the high sulfur content can cause digestive discomfort, heartburn, or bad breath. If you have a sensitive digestive system or a history of digestive issues, try eating onions cooked instead of raw to reduce their potential side effects.