Does eating sesame seed products reduce HbA1c levels in adults?

Based on the evidence we’ve reviewed so far, eating sesame seed products appears to be linked with a meaningful reduction in HbA1c, a key marker of long‑term blood sugar control. Our analysis of one claim, which is supported by 39 studies and refuted by none, shows that sesame seed products can lower HbA1c by about 0.75% over a period of a few months [1]. That reduction is often considered clinically significant for improving blood sugar management. We want to be clear that this is what we have found up to this point — our view is partial and will likely become more nuanced as new research emerges. The evidence we’ve examined leans strongly toward a benefit, but because only one composite claim was analyzed, we cannot say the effect is guaranteed for every individual. The studies behind this claim consistently point in the same direction, which gives us more confidence than if the results were mixed. Still, we always treat our conclusions as provisional. In practical terms, if you are an adult looking to better manage your blood sugar, incorporating sesame seeds, oil, or other sesame products into your diet may be a worthwhile step — but it should be part of a broader plan that includes medical guidance and other lifestyle habits. As always, check with your healthcare provider before making significant changes.