A large analysis of multiple studies found that resveratrol supplements do not help control blood sugar or improve most cholesterol levels in people with type 2 diabetes. The review combined results from 10 meta-analyses, which themselves pooled data from many smaller studies. Researchers looked at effects on fasting blood sugar, HbA1c, insulin, insulin resistance, HDL cholesterol, triglycerides, and total cholesterol. For all of these, resveratrol showed no significant benefit.
There was one exception: LDL cholesterol (the "bad" cholesterol) did decrease significantly. Also, in larger studies with at least 500 participants, serum insulin levels dropped. However, the overall evidence was weak because the studies varied widely in design and quality. The review did not report any safety issues, but that does not mean resveratrol is risk-free.
Because the results are mixed and the underlying studies are inconsistent, experts say resveratrol is not a helpful treatment for managing blood sugar or cholesterol in type 2 diabetes. People with diabetes should focus on proven treatments and lifestyle changes, and talk to their doctor before trying any supplement.
Common questions
Does resveratrol help lower blood sugar in type 2 diabetes?
No, this review found that resveratrol did not significantly lower fasting blood sugar, HbA1c, or insulin levels in people with type 2 diabetes. Only in very large studies was a small drop in insulin seen, but overall the evidence does not support using resveratrol for blood sugar control.
Does resveratrol improve cholesterol levels?
Resveratrol did not improve HDL cholesterol, triglycerides, or total cholesterol. It did lower LDL cholesterol (the bad kind) significantly, but the overall effect on lipid profile was not considered beneficial enough to recommend resveratrol for cholesterol management in type 2 diabetes.
Is resveratrol safe for people with type 2 diabetes?
The review did not report any safety issues, but that does not mean resveratrol is completely safe. Because the studies varied widely and no adverse events were mentioned, it is best to talk to your doctor before taking resveratrol, especially if you are on other medications.
Should I take resveratrol for my type 2 diabetes?
Based on this review, resveratrol is not recommended for managing blood sugar or cholesterol in type 2 diabetes. The evidence shows no significant benefits for most outcomes. Always consult your doctor before starting any supplement, as it may interact with your current treatment.
