{"doi":"10.1093/gastro/goaa097","title":"Non-invasive digestion monitoring with an FDA-cleared wearable biosensor: further validation for use in tracking food ingestion","abstract":"Obesity affects one-third of the US population and accounts for $200 billion/year in expenditures [1]. Diet and exercise form the cornerstone of management, yet are often ineffective [2]. Mobile health applications (mHealth apps) can augment traditional strategies; Gill and Panda [3] demonstrated that obese patients can modify their eating behavior and lose weight using an mHealth app to track food intake. While promising, these apps typically require active data input and currently lack passively collected, physiologic input to support sustained behavior change.\r\n\r\nAcoustic gastrointestinal surveillance (AGIS) using a wearable biosensor (AbStats; GI Logic, Pasadena, CA) is cleared by the US Food and Drug Administration (FDA) as a validated technique to non-invasively measure intestinal motility [4–6]. Two biosensors adhere to the external abdominal wall and analyse intestinal sounds (Supplementary Figure 1), which are counted and time-averaged per minute to yield an “intestinal rate” (IR). By listening to bowel contractions and counting them using an app, AGIS enables patients to monitor digestion continuously using a wearable “gut speedometer.” In prior studies, AGIS distinguished post-operative ileus from non-ileus surgical patients and predicted ileus onset with 97% accuracy [5, 6]. We now seek to determine whether AGIS biosensors can distinguish small, calorically light meals from large, calorically dense meals in healthy subjects in a proof-of-concept study.","journal":"Gastroenterology report","year":2020,"id":114204,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":2,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9543,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":537638,"name":"Mayra Lopez","orcid":"0000-0001-5897-2679","position":1,"is_corresponding":false},{"id":337447,"name":"Brennan Spiegel","orcid":"0000-0002-4608-6896","position":2,"is_corresponding":false},{"id":227745,"name":"Christopher V. Almario","orcid":"0000-0003-0664-9479","position":3,"is_corresponding":false},{"id":537637,"name":"Erica Cohen","orcid":"0000-0003-1387-3751","position":0,"is_corresponding":true}],"reference_count":6,"raw_metadata":null,"created_at":"2026-07-18T23:13:29.674622Z","pmid":"34733534","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}