Wearable Devices for Caloric Intake Assessment: State of Art and Future Developments

Maria Laura Magrini1, Clara Minto1, Francesca Lazzarini1, Matteo Martinato2, Dario Gregori1, *
1 Unit of Biostatistics, Epidemiology and Public Health, Department of Cardiac, Thoracic and Vascular Sciences, University of Padova, Padova, Italy
2 Department of Gastroenterology, University of Padova, Padova, Italy

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Creative Commons License
© 2017 Magrini et al.

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this authors at the Unit of Biostatistics, Epidemiology and Public Health, Department of Cardiac, Thoracic and Vascular Sciences, Via Loredan 18, 35121 Padova, Italy; Tel: +390498275384; Fax: +3902700445089; E-mail:



The self-monitoring of caloric intake is becoming necessary as the number of pathologies related to eating increases. New wearable devices may help people to automatically record energy assumed in their meals.


The present review collects the released articles about wearable devices or method for automatic caloric assessments.


A literature research has been performed with PubMed, Google Scholar, Scopus and search engines, considering released articles regarding applications of wearable devices in eating environment, from 2005 onwards.


Several tools allow caloric assessment and food registration: wearable devices counting the number of bites ingested by the user, instruments detecting swallows and chewings, methods that analyse food with digital photography. All of them still require more validation and improvement.


Automatic recording of caloric intake through wearable devices is a promising method to monitor body weight and eating habits in clinical and non-clinical settings, and the research is still going on.

Keywords: Wearable devices, Caloric intake monitoring, Non-communicable diseases, Body Mass Index, Bite, Armband.