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Diabetes mellitus is one of the leading causes of mortality world over. It occurs when pancreas ability to secrete insulin is diminished, or the body is not able to make proper use of the produced insulin. Type 2 diabetes or non-insulin-dependent diabetes mellitus constitute 90% of all cases of diabetes. It is linked with health deteriorating conditions especially related to microvasculature complications in kidneys, nerves and eyes. It is also associated with an increased risk of stroke and cardiovascular diseases. Many plant-derived beverages are screened for the prevention and management of diabetes. Green tea obtained from steeping leaves of Camellia sinensis in hot water is one of the beverages that is getting attention for its role in tackling diabetes. This review provides an update on the mechanism of green tea in the management of diabetes.
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