Patent attributes
A device configured to furnish hydration monitoring employs a method using multiple different wavelengths of light transmitted into a human body part, each wavelength being input at a given respective input intensity. Respective output intensities of respective ones of the multiple wavelengths can be measured, upon transmission thereof through the human body part. The corresponding input intensity and the corresponding output intensity for the respective ones of the transmitted wavelengths can be used along with a form of an equation for the Beer-Lambert law to calculate a concentration-related slope, the concentration-related slope being proportional to the relative concentration of water in the human body part at a given time. A hydration-level output indicative of a level of hydration can then be generated based on the concentration-related slope.