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Turmeric compound curcumin protects blood vessels in diabetic rats, study finds

New research in a rat model of Type 1 diabetes suggests curcumin reduces inflammation and improves vascular health, though human trials are still required.

The short version

  • A study presented at the 2026 American Physiology Summit shows that curcumin, a compound found in turmeric, helped protect blood vessels from damage in rats with Type 1 diabetes.
  • After one month of treatment, diabetic rats given curcumin exhibited reduced inflammation, improved cellular signaling, and restored vascular health similar to nondiabetic animals.
  • Researchers caution that human clinical trials are necessary to determine if the compound is safe and effective for people, and advise consulting a doctor before taking supplements.

Key facts

  • Curcumin was shown to improve blood sugar levels, reduce inflammation, restore cellular responses, and preserve the structure and function of the aorta in a rat model of Type 1 diabetes.[ScienceDaily]
  • The research, led by Swasti Rastogi of the Florida Institute of Technology, was presented at the 2026 American Physiology Summit in Minneapolis.[ScienceDaily]
  • Curcumin treatment in diabetic rats appeared to restore more normal calcium activity in blood vessels and rebalance heat shock protein 70, which is typically disrupted by diabetes.[ScienceDaily]

What remains uncertain

  • It remains unknown whether the vascular benefits observed in rats will translate to humans, as clinical trials have yet to establish human safety, efficacy, and appropriate dosing.[ScienceDaily]

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