Diabetes is a chronic disease at which the organism cannot produce insulin or use already available insulin. Insulin is the hormone produced by a pancreas. It is necessary for transfer of glucose (sugar) from blood in organism cells which at the expense of it receive energy. When insulin is not enough or it does not work properly, glucose level in blood increases.

Diabetes is diagnosed by means of the blood tests showing the high level of glucose in blood.

Over time the high level of glucose in blood (known also as a hyperglycemia) can cause damage of vessels and body tissues that, in turn, can lead to life-threatening complications and disability.