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Hitachi has conducted extensive research concerning the thermal energy generated by metabolic reactions in the human body, which reflect a balance between blood sugar levels and local oxygen supply. Hitachi has determined that it is possible to compute the level of blood sugar by measuring parameters such as the thermal energy generated by metabolic reactions, the level of oxygen saturation of hemoglobin, and blood flow.
Hitachi’s investigational device uses special sensors that accurately measure various temperatures and light characteristics in a person’s fingertip. The device is intended to compute blood sugar levels based on the analysis of various physiological parameters involved in the generation of metabolic thermal energy, and would therefore eliminate the need to obtain a blood sample. Hitachi’s device is compact by virtue of the development of a complex sensor pick-up, which contains a contact thermometer, a radiation thermometer, and a multi-wavelength reflective dispersion photometer, all in one unit. Hitachi’s goal is to use these technologies to dramatically improve the quality of life of diabetics by making it, easier to measure blood sugar levels, which would greatly contribute to the prevention and treatment of lifestyle-related diseases, such as diabetes. A 2002 survey found that there were approximately 150 million diabetics in the world and it is estimated that there will be as many as 300 million by 2025.1 In Japan, a 2002 survey found that 7.4 million people are strongly suspected to have diabetes.2