05/13/2026
Research suggests that eating raw onions may help improve insulin sensitivity and support healthier blood sugar levels. Scientists believe certain natural compounds found in onions, including sulfur compounds and antioxidants like quercetin, may influence how the body responds to insulin and processes glucose after meals.
Some studies reported that people who regularly consumed raw onions showed lower blood sugar readings compared to those who did not. Researchers say the effect may be linked to the way onions interact with metabolism, inflammation, and hormone activity connected to blood sugar regulation inside the body.