{"meta":{"exportedAt":"2026-10-23T08:58:40.601Z","formatVersion":2,"selection":{"q":"poisoning","system":"","harm":"","context":"","country":"","role":"","relation":"core","evidence":"","year":"2025","response":"","severity":"","verification":"","view":"incidents","sort":"added"},"totalIncidents":1,"coverage":{"cases":1,"countries":1,"languages":1,"unknownLocation":0,"locationPending":0,"unknownLanguage":0,"unknownDate":0,"lawsuits":0,"regulatory":0,"minors":0,"coreRelations":1,"contextualRelations":0,"mixedRelations":0,"unknownRelations":0,"relationPending":0,"relationUnknown":0},"countingNote":"Distinct public cases in this selection. People counts apply within individual cases only; cross-case person overlap has not been resolved. No population incidence estimate.","affectedCountNote":"Interpret person counts with affectedCountStatus and the reported effects. Unquantified zeros are placeholders, not a measured zero.","source":"AI incidents","publisher":"NOPE","url":"https://nope.net/incidents","license":"CC BY 4.0"},"incidents":[{"id":"2025-wakayama-japan-ai-photo-check-called-poisonous-mushroom-edible-man-hospitalised","caseFacts":{"claims":[{"id":"c1","status":"reported","evidence":[{"locator":"'和歌山市生活保健課によると、同市在住の70代男性は11月3日、奈良県下北山村の山中でヒラタケ'","relation":"supports","source_id":"s2"},{"locator":"'2025年11月、70代男性が奈良県下北山村の山中で「ヒラタケ」や「シイタケ」に似たキノコを採取'","relation":"supports","source_id":"s1"}],"assertion":"A man in his 70s living in Wakayama city gathered wild mushrooms resembling hiratake and shiitake in the mountains of Shimokitayama village, Nara prefecture, on 3 November 2025, according to the city’s public-health division.","causal_attribution":"Wakayama city public-health division as reported by MBS and relayed by HuffPost Japan; one origin."},{"id":"c2","status":"reported","evidence":[{"locator":"'この翌日、そのキノコを電子端末で撮影してAI判定を行ったところ、AIが「シイタケかヒラタケで食べられる」という旨の回答をしました'","relation":"supports","source_id":"s1"},{"locator":"'被害男性が毒キノコを食べてしまった背景には、AI判定がありました'","relation":"supports","source_id":"s2"},{"locator":"'翌4日、食べられるかどうかを植物園などに確認しようとしましたが、連絡がつながらなかったため、採取したキノコを自らの電子端末で撮影し、AI判定を行ったところ、AIは“シイタケかヒラタケで食べられる”という旨を回答しました。'","relation":"supports","source_id":"s2"}],"assertion":"On 4 November 2025 he tried to ask a botanical garden and others whether the mushrooms were edible but could not reach anyone, so he photographed one with his own electronic device and ran an AI identification, which answered to the effect that it was shiitake or hiratake and edible.","causal_attribution":"The city’s account as reported by MBS (full article read) and summarised by HuffPost Japan; one origin. The tool is not identified and the exchange is not reproduced."},{"id":"c3","status":"reported","evidence":[{"locator":"'実際は有毒の「ツキヨタケ」であったため、喫食約30分で嘔吐の症状が出て、男性は一時入院したといいます'","relation":"supports","source_id":"s1"},{"locator":"'和歌山市の70代男性が嘔吐の症状で一時入院'","relation":"supports","source_id":"s2"},{"locator":"'それを受け、男性はキノコを焼いて食べましたが、約30分後から嘔吐の症状が出て一時入院しました。現在は快復しています。'","relation":"supports","source_id":"s2"},{"locator":"'県立自然博物館や同市の衛生研究所が残品を調べたところ、キノコは毒キノコである「ツキヨタケ」と判明しました。'","relation":"supports","source_id":"s2"}],"assertion":"In response to the AI’s answer he grilled and ate the mushroom; about 30 minutes later he began vomiting and was briefly hospitalised, and he has since recovered. The prefectural natural history museum and the city’s public-health research institute examined the leftovers and identified them as the poisonous tsukiyotake.","causal_attribution":"City account as reported by MBS and relayed by HuffPost Japan. MBS links the eating to the AI answer ('それを受け', in response to that); the species identification is the museum's and institute's examination as reported. No first-person statement or medical record was inspected."},{"id":"c4","status":"reported","evidence":[{"locator":"'農林水産省は9月4日、SNSを通じて注意を呼びかけました。キノコは「専門家でも見分けが難しい場合がある」として、「検索結果やAIの回答で食用かどうかを判断するのは大変危険です」と警鐘を鳴らしています'","relation":"supports","source_id":"s1"}],"assertion":"Japan’s agriculture ministry warned on 4 September 2026 that deciding whether a mushroom is edible from search results or AI answers is very dangerous.","causal_attribution":"HuffPost Japan’s report of the ministry’s social-media warning; the ministry post itself was not inspected."}],"effects":[{"label":"poisoning and brief hospitalisation after an AI identification called a poisonous mushroom edible","claim_id":"c3","direction":"negative"}],"sources":[{"id":"s1","url":"https://www.huffingtonpost.jp/entry/story_jp_6aa0c9c1e4b0307636055289","kind":"news_report","access":"read","language":"ja","translation_note":"Read in Japanese and translated into English by the research agent (an AI) on 2026-10-08 (HTTP 200); no human translator or reviewer. HuffPost Japan editorial piece of 9 September 2026 that summarises the MBS report of the Wakayama case and the agriculture ministry’s warning.","independence_group":"mbs-wakayama-city-health-division"},{"id":"s2","url":"https://newsdig.tbs.co.jp/articles/-/2303290","kind":"news_report","access":"read","language":"ja","translation_note":"Read in Japanese and translated into English by the research agent (an AI); no human translator or reviewer. On 2026-10-08 only the headline and opening paragraph were readable behind a read-more control. On 2026-10-11 the full article body was read from the same article's ?display=1 page (https://newsdig.tbs.co.jp/articles/-/2303290?display=1, HTTP 200). MBS report attributed to Wakayama city’s public-health division; same origin as s1.","independence_group":"mbs-wakayama-city-health-division"}],"version":1,"ai_roles":["own_use"],"contexts":["health","everyday_life"],"unknowns":["Which AI tool or app produced the identification, and the exact wording of its answer.","How long the man was in hospital.","Whether the AI identification was the only basis for his decision to eat the mushroom."],"geography":{"basis":"The mushrooms were gathered in Shimokitayama village, Nara prefecture, and the case was handled and announced by Wakayama city, where the man lives; both are in Japan. No court is involved.","court_countries":[],"event_countries":["JP"],"affected_person_countries":["JP"]},"publication":{"basis":"Published as a core case on one official origin carried by two outlets: Wakayama city’s public-health division, through an MBS report summarised by HuffPost Japan, says a man in his 70s ran an AI identification of a photographed wild mushroom, was told it was edible, ate the poisonous tsukiyotake and was briefly hospitalised with vomiting; MBS reports he has since recovered. The AI’s answer to the man is described and connected to the harm. Every claim is attributed to the city’s account; the tool and the exchange are recorded as unknown.","reviewed_on":"2026-10-11"},"ai_involvement":{"basis":"MBS’s report of Wakayama city’s public-health division, read in full and summarised by HuffPost Japan, says the man photographed the gathered mushroom with his own electronic device and ran an AI identification after failing to reach a botanical garden, that the AI answered to the effect that it was shiitake or hiratake and edible, and that in response he grilled and ate it and was poisoned by tsukiyotake. The AI’s answer to the man is the described contribution (communicated_with), and the account connects that answer to his eating the mushroom. The tool is not identified and the exchange is not reproduced.","status":"reported"},"person_relations":["communicated_with"]},"name":"Wakayama, Japan: city health officials say a man in his 70s was hospitalised after an AI photo check told him a poisonous wild mushroom was edible (MBS report)","summary":"According to Wakayama city’s public-health division, as reported by MBS (Mainichi Broadcasting) on 21 November 2025 and relayed by HuffPost Japan on 9 September 2026, a man in his 70s living in Wakayama city gathered wild mushrooms resembling hiratake (oyster mushroom) and shiitake in the mountains of Shimokitayama village, Nara prefecture, on 3 November 2025. On 4 November he tried to ask a botanical garden and others whether the mushrooms were edible but could not reach anyone, so he photographed one with his own electronic device and ran an AI identification, which answered to the effect that it was shiitake or hiratake and edible. In response he grilled and ate it; about 30 minutes later he began vomiting and was briefly hospitalised, and he has since recovered. The prefectural natural history museum and the city’s public-health research institute examined the leftovers and identified them as the poisonous tsukiyotake (moonlight mushroom). The city warned that judging wild mushrooms by AI or by picture books alone is dangerous. HuffPost Japan reports that Japan’s agriculture ministry issued a warning on 4 September 2026 against deciding edibility from search results or AI answers. The AI tool is not identified in the reports and the man’s exact exchange with it is not reproduced.","incidentDate":"2025-11-04","incidentKind":"single_event","incidentDatePrecision":"day","exposurePattern":"single_interaction","reportedDate":"2025-11-21","aiSystem":"AI image identification run on an electronic device, according to Wakayama city’s public-health division as reported by MBS, which answered that a photographed wild mushroom was shiitake or hiratake and edible (tool not identified)","aiProduct":"Unidentified mushroom-identification tool","severity":"medium","verificationStatus":"credible","harmCategories":[],"harmOutcomes":["hospitalization","medical_deterioration"],"harmOutcomeSummary":"According to Wakayama city’s public-health division as reported by MBS and relayed by HuffPost Japan, a man in his 70s ate a poisonous tsukiyotake mushroom after an AI identification of his photograph answered that it was edible shiitake or hiratake; he began vomiting about 30 minutes later and was briefly hospitalised, and MBS reports that he has since recovered.","frameworkFacets":[],"causationStatus":"supported","participantUsersAffectedMin":1,"otherPeopleHarmedMin":0,"affectedCountStatus":"exact","affectedCountEvidence":"One person: the man in his 70s who ran the AI check and ate the mushroom (own use). No other person is reported poisoned.","victimAgeRange":"elderly","jurisdiction":"JP","platformType":"other","outcomeType":"media_coverage","outcomeStatus":"resolved","primarySourceUrl":"https://www.huffingtonpost.jp/entry/story_jp_6aa0c9c1e4b0307636055289","primarySourceLabel":"HuffPost Japan, 9 September 2026: Do not take that Google Lens result at face value; AI answers have led to poisoning, one case critical, ministry warns","firstPublishedAt":"2026-10-08T03:19:56.351111+00:00","updatedAt":"2026-10-11T07:43:32.844334+00:00","scopeVersion":"facts-v3","tags":["mushroom-identification","image-recognition","poisoning","hospitalisation","foraging","japan","wakayama","communicated-with"]}]}