Curcumin shows promise in reducing diabetes-related vascular damage in rats

In a rat model of Type 1 diabetes, curcumin treatment reduced inflammation, restored cellular signaling, and improved aortic structure and function to levels similar to nondiabetic animals. The findings, presented at the 2026 American Physiology Summit, suggest a potential new approach to lowering cardiovascular risks in diabetes, though human trials are needed.

The study used a rat model of Type 1 diabetes, comparing diabetic rats given curcumin against diabetic rats that did not receive the compound. After one month, treated animals showed vascular improvements approaching those of nondiabetic controls. The compound appeared to reduce inflammation, restore calcium signaling in blood vessels, and rebalance heat shock protein 70, a protein whose regulation diabetes disrupts.

Type 1 diabetes affects roughly 2 million Americans, and even with insulin therapy, patients face elevated cardiovascular risk because chronic high blood sugar damages vessel structure and elasticity. The findings were presented at the 2026 American Physiology Summit in Minneapolis, with lead author Swasti Rastogi from Florida Institute of Technology emphasizing that curcumin's benefits extend beyond simple antioxidant effects.