Introduction
Maintaining healthy blood glucose levels is essential for preventing metabolic diseases like diabetes. While effective medical treatments exist, more and more people are seeking natural options to support blood sugar control. Among these,  red onion  stands out for its remarkable antioxidant properties and its potential to improve insulin sensitivity. In this article, you’ll discover why this common ingredient can become an ally for your health and how to prepare it in a simple and delicious recipe.
Why red onions matter
Red onion  (Allium cepa)  not only adds flavor to your meals, but also offers a unique combination of flavonoids (such as quercetin) and sulfur compounds that support metabolism.
Several studies have shown that these compounds can:
Improve insulin sensitivity.
Reduce oxidative stress.
Inhibit enzymes such as α-glucosidase and α-amylase, thus reducing glucose spikes after meals.
In a small clinical trial, consuming  100g of raw onion  reduced fasting glucose by about  40mg/dL  in patients with type 2 diabetes, four hours after ingestion.
In summary, including red onion in your diet can help maintain glycemic balance, always as a complement and not a substitute for medical treatment.
