Onion
Allium cepa
Safety Level
Generally Recognized as Safe (GRAS)
Safe for most adults in typical amounts
Evidence Quality
Moderate
Some clinical evidence
Main Uses
5 Science-Backed Benefits
Modern & traditional applications
Important Notes
3 Safety Considerations
Always consult healthcare provider
What is Onion?
Onion (Allium cepa) is more than just a kitchen staple. Rich in quercetin, sulfur compounds, and prebiotic fibers, onions support heart health, blood sugar balance, immunity, and digestion. Both fresh and pickled onions are valued as natural remedies in modern and traditional wellness.
Key Active Compounds
Active compounds in Onion include Quercetin - powerful flavonoid antioxidant for heart health, Sulfur compounds (allicin, allyl sulfides) - natural antibacterial and cholesterol support, Prebiotic fibers (inulin, FOS) - feed beneficial gut bacteria, Flavonoids - anti-inflammatory and vascular protection, Chromium - blood sugar regulation support, Vitamin C - immune system strengthening that contribute to its therapeutic effects.
Primary Properties
How to Use Onion
Onion Soup (Daily Warmth)
Simmer sliced onions with bone broth or vegetable stock 20–30 minutes; add a pinch of black pepper. Enjoy 3–5 times/week to support circulation and digestion.
Pickled Onions (Gut-Friendly)
Add 2–3 tbsp/day as a condiment for probiotic support plus onion antioxidants. Start small if you have a sensitive stomach.
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