What are the natural steps and food to be consumed to increase the insulin secretion by beta cells in our body?

Cure for diabetes using Bitter Melon and Fenugreek (Methi) is mentioned in this video: a href="http://www.ashram.org/MultiMedia/Videos/VideoPlayer/TabId/404/VideoId/638/Cure-For-Diabetes-Depression-Kidney-Problems.aspx" rel="nofollow"http://www.ashram.org/MultiMedia/Videos/…/a