CPC A61B 5/4866 (2013.01) [A61B 5/0261 (2013.01); A61B 5/14532 (2013.01); A61B 5/681 (2013.01); A61B 5/0205 (2013.01); A61B 5/1455 (2013.01); A61B 5/7203 (2013.01); A61B 5/7264 (2013.01); A61B 2562/0219 (2013.01)] | 19 Claims |
1. A healthcare apparatus, comprising:
a plurality of light sources configured to emit light of different wavelengths onto an object;
a light detector configured to measure an optical signal of each of the wavelengths by receiving light reflected or scattered from the object; and
a processor configured to:
extract representative waveforms of each of the wavelengths from the optical signal of each of the wavelengths;
generate an integrated representative waveform by integrating the representative waveforms of each of the wavelengths, and extract a feature from the integrated representative waveform;
obtain a blood glucose level based on a blood glucose level calculation model, which defines a relationship between the feature and the blood glucose level, and obtain a blood flow index based on a blood flow index calculation model which defines a relationship between the feature and the blood flow index; and
estimate at least one from among dietary information and dietary metabolism state information abased on change in a time interval between a peak point of the blood glucose level and a peak point of the blood flow index after ingestion of a food by the object.
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