This review from 2022 evaluates evidence relating to the effect of Morus alba on blood sugar management. Authors found 13 RCTs in 10 articles were eligible for inclusion. Long-term studies made participants take Morus alba (MA) two or three times a day, and the dosage varied from 10.8 mg to 54 mg. Results showed that Morus alba can reduce postprandial glucose and insulin levels. However, it is insufficient to conclude that Morus alba is an effective intervention for lowering blood glucose levels. Therefore, more rigorous studies are needed to reveal the effect of MA on blood glucose levels.
Jeong, H. I., Jang, S., & Kim, K. H. (2022). Morus alba L. for Blood Sugar Management: A Systematic Review and Meta-Analysis. Evidence-based complementary and alternative medicine : eCAM, 2022, 9282154. https://doi.org/10.1155/2022/9282154