There is currently very little research regarding curcumin’s effects on blood sugar levels.
One randomized controlled trial (RCT) found that supplementation with 500 mg of curcumin three times daily for 12 weeks significantly decreased fasting blood glucose levels in women with polycystic ovary syndrome (PCOS) compared to a placebo but had no effect on insulin levels or insulin resistance.[1] However, another RCT that included individuals with metabolic syndrome and used nanomicellar curcumin did not find any improvements in either fasting blood glucose or insulin levels.[2]
References
- ^Javad Heshmati, Ashraf Moini, Mahdi Sepidarkish, Mojgan Morvaridzadeh, Masoud Salehi, Andriko Palmowski, Maryam Farid Mojtahedi, Farzad ShidfarEffects of curcumin supplementation on blood glucose, insulin resistance and androgens in patients with polycystic ovary syndrome: A randomized double-blind placebo-controlled clinical trialPhytomedicine.(2021 Jan)
- ^Zohre Bateni, Hamid Reza Rahimi, Mehdi Hedayati, Shila Afsharian, Razieh Goudarzi, Golbon SohrabThe effects of nano-curcumin supplementation on glycemic control, blood pressure, lipid profile, and insulin resistance in patients with the metabolic syndrome: A randomized, double-blind clinical trialPhytother Res.(2021 Apr 13)