{"entity":{"id":"idea-prev-weight-loss-auto-alert","kind":"idea","name":"Smart scales and health records flag unexplained weight loss for a cancer check","aka":[],"tldr":"Losing weight without trying is one of the strongest signs of hidden cancer, but it is rarely measured. Automatic alerts from recorded weights could prompt a check-up.","summary":"Unexpected weight loss in primary care carries a 1-3% cancer risk within six months, higher with other signs, yet weights are recorded sporadically. Propose a primary-care algorithm, with opt-in consumer scale or wearable integration, that flags 5% or more unintentional loss over six months and prompts a structured blood-and-imaging check.","asOf":"2026-09-08","links":[{"label":"Bottleneck evidence (The hardest cancers are found late): Crosby et al., Early detection of cancer (Science 2022)","url":"https://doi.org/10.1126/science.aay9040"}],"tags":[],"related":[],"cancers":[],"sections":["early-detection"],"technologies":[],"targets":[],"drugs":[],"companies":[],"institutions":[],"pathways":[],"terms":[],"trials":[],"people":[],"bottlenecks":["b-early-detection"],"keyPapers":["paper-crosby-science"],"journals":[],"dependsOn":[],"notes":[],"hypothesis":"Automated weight-loss alerts increase cancer diagnoses via non-emergency routes and reduce emergency presentations by at least 10% in the alerted population.","rationale":"Weight loss precedes diagnosis by months; the signal is free and the action is cheap.","test":"Run a cluster RCT of the alert in primary care networks; the endpoints are route to diagnosis and stage.","maturity":"speculative","actor":"clinic","cost":"small","horizonYears":3},"route":"/ideas/idea-prev-weight-loss-auto-alert/","neighbours":{"section":[{"id":"early-detection","kind":"section","name":"Early Detection & Screening","route":"/fronts/early-detection/"}],"bottleneck":[{"id":"b-early-detection","kind":"bottleneck","name":"The hardest cancers are found late","route":"/bottlenecks/b-early-detection/"}],"paper":[{"id":"paper-crosby-science","kind":"paper","name":"Early detection of cancer","route":"/key-papers/paper-crosby-science/"}]}}