Abstract: Measuring the impedance of a human body region at a high frequency (ZHF) and a low frequency (ZLF). ZHF is used to obtain the value of the volume of fluid in the tissues of the region. ZLF is used to obtain the value of the volume of extracellular fluid in the tissues. The increase in the metabolic component in the volume of extracellular fluid is determined by the increase of the volume of all of the fluid in comparison with the previous measurement, determining the increase in the volume of extracellular fluid in comparison with the previous measurement and subsequently calculating the difference between the increases in the volume of all of the fluid and the volume of extracellular fluid. The glucose concentration G(tk) is determined by adding the amount of increase in the glucose concentration and the value of the glucose concentration determined at the previous measuring stage.

Abstract: The glycemic index is determined based on the results of blood glucose concentration measurements by evaluating time ?t from the beginning of food-related increase of blood glucose concentration until the peak of glucose concentration is reached, after which maximum increase ?Gmax of said glucose concentration is determined over the given period of time. Thereat, the glycemic index of food is defined as a ratio of maximum increase of blood glucose concentration ?Gmax versus maximum increase of said glucose concentration in case of pure glucose intake in the amount equal to carbohydrate content of the consumed food, which is proportional to the product of ?Gmax by ?t. The invention substantially simplifies the procedure for measuring the glycemic index of real food and facilitates the development of simple personal devices for monitoring carbohydrate metabolism.

Abstract: Determining a state of water deficiency in a human body during daily life activities is done by measuring an impedance of a portion of the human body at a low frequency and at a high frequency. An amount of fluid in the body tissues in the volume under study is assessed based on the impedance at the high frequency. A current amount of extracellular fluid in the tissues in the volume is assessed based on the impedance at the low frequency. A reference value of the assessed amount of extracellular fluid in the tissues is preselected at the start of measurements. A correction value is determined based on the changes in blood amount in the volume at the current measurement time. A corrected assessment value is the determined. Using the corrected assessment value, the onset of water deficiency is determined.

Abstract: The glycemic index is determined based on the results of blood glucose concentration measurements by evaluating time ?t from the beginning of food-related increase of blood glucose concentration until the peak of glucose concentration is reached, after which maximum increase ?Gmax of said glucose concentration is determined over the given period of time. Thereat, the glycemic index of food is defined as a ratio of maximum increase of blood glucose concentration ?Gmax versus maximum increase of said glucose concentration in case of pure glucose intake in the amount equal to carbohydrate content of the consumed food, which is proportional to the product of ?Gmax by ?t. The invention substantially simplifies the procedure for measuring the glycemic index of real food and facilitates the development of simple personal devices for monitoring carbohydrate metabolism.

Abstract: Measuring the impedance of a human body region at a high frequency (ZHF) and a low frequency (ZLF). ZHF is used to obtain the value of the volume of fluid in the tissues of the region. ZLF is used to obtain the value of the volume of extracellular fluid in the tissues. The increase in the metabolic component in the volume of extracellular fluid is determined by the increase of the volume of all of the fluid in comparison with the previous measurement, determining the increase in the volume of extracellular fluid in comparison with the previous measurement and subsequently calculating the difference between the increases in the volume of all of the fluid and the volume of extracellular fluid. The glucose concentration G(tk) is determined by adding the amount of increase in the glucose concentration and the value of the glucose concentration determined at the previous measuring stage.

Abstract: Measuring the impedance of a human body region at a high frequency (ZHF) and a low frequency (ZLF). ZHF is used to obtain the value of the volume of fluid in the tissues of the region. ZLF is used to obtain the value of the volume of extracellular fluid in the tissues. The increase in the metabolic component in the volume of extracellular fluid is determined by the increase of the volume of all of the fluid in comparison with the previous measurement, determining the increase in the volume of extracellular fluid in comparison with the previous measurement and subsequently calculating the difference between the increases in the volume of all of the fluid and the volume of extracellular fluid. The glucose concentration G(tk) is determined by adding the amount of increase in the glucose concentration and the value of the glucose concentration determined at the previous measuring stage.