But here’s the encouraging part: certain plant compounds—like quercetin and sulfur-rich allies in onions—have shown promise in preliminary research for supporting better glucose control and reducing oxidative stress in blood vessels.
Ready to explore how something as simple as an onion could fit into your routine?
Why Red Onions Stand Out for Blood Sugar and Heart Support
Red onions are particularly rich in quercetin, a flavonoid antioxidant. Research published in journals like Nutrition Research suggests quercetin may help improve insulin sensitivity and reduce fasting glucose levels.
Onions also contain allyl propyl disulfide, a sulfur compound that early studies link to modest blood sugar reductions.
And the best news? These benefits come from everyday amounts—often just a quarter of an onion—making it an accessible, low-cost option to consider alongside your regular care.
7 Simple Onion-Based Drinks Backed by Early Research
Here are gentle, evidence-inspired ways seniors are incorporating onions into their routines. Each takes under 5 minutes and uses ingredients you likely already have.
#7: Morning Red Onion Water – A Gentle Start
Blend ¼ red onion with 1 cup water and a pinch of black pepper. Strain and drink on an empty stomach.
A 2024 study from South Korea found that onion-derived sulfur compounds helped lower fasting glucose in participants over 30 days. Many report feeling more energized by day four.
#6: Onion-Ginger Morning Tonic
