An overview of diabetes
According to The NICHD, “Diabetes is a condition in which the body’s levels of blood sugar and the hormone insulin are out of balance. It is one of the most common diseases in the United States, and its numbers are constantly rising.” – The NICHD / Diabetes: Overview

The reduction of insulin secretion by beta cells within the pancreas, and a lessening of insulin receptivity (an increase in insulin tolerance) in muscle cells etc. are involved in the onset of Type 2 diabetes. Both alpha cells and beta cells exist in the pancreas, and both regulate blood sugar levels.
Test Method and Results

Insulin secreting pancreatic beta cells
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Hot-water extracts of various mushrooms
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Measure the promotion of insulin secretion
We found that hot-water extracted from mushrooms may produce a strong effect on the promotion of insulin secretion. Results were especially notable in Bunashimeji, and Bunapi.
Published in: Japanese Society of Mushroom Science and Biotechnology Vol.14(2010)