In 2011, researchers at the Shahid Beheshti Medical University in Iran conducted a clinical study that showed that broccoli sprouts enriched sulforaphane can reduce oxidative stress reaction, HbA1c levels and improve insulin resistance in patients with type 2 diabetes（https://pubmed.ncbi.nlm.nih.gov/21559038/）.

In 2017, Professor Anders Rosengren of the diabetes research center of Lund University in Sweden led his team to find that sulforaphane could inhibit the production of glucose in liver cells. Taking a dose of 150 mmol sulforaphane once a day together with metformin for 12 weeks can effectively reduce fasting blood glucose and glycosylated hemoglobin (HbA1c) levels in obese patients with type 2 diabetes mellitus with poor glycemic control. The related research is published in the are published in the sub journal of Science（http://europepmc.org/article/MED/28615356）.

Figure: IDF Diabetes Atlas Ninth edition 2019 by International Diabetes Federation