{"rewrite":{"id":"r_189717e7ae335d1b2ca90e2d","clusterId":"c_671b19f3f39bc491d0e9885f","slug":"ntt-sonority-warns-of-ear-warming-risks-from-summer-earphone-use","model":"deepseek-v4-flash","headline":"NTT Sonority Warns of 'Ear Warming' Risks From Summer Earphone Use","summary":"NTT Sonority's nwm brand held a roundtable with an ENT doctor warning about 'ear warming'-ear canal overheating from closed earphones in summer. A survey of 639 daily users found 59.4% feel discomfort, but only 14.9% consciously care for ears. The doctor explained risks of ear fungus and otitis externa, and recommended open-ear earphones. Generational differences in risk behavior were identified.","whyItMatters":"The campaign uses medical authority to promote open-ear earphones as a solution to a health issue the brand itself has defined.","webCardHtml":"\u003cp\u003eA thermography experiment conducted by NTT Sonority showed that closed earphones raise ear temperature by about 1.8°C after one hour of wear. The company\u0026#39;s nwm brand held a roundtable on June 17 with ENT specialist Toshihiko Oba, who warned that the combination of heat, humidity, and closed earphones creates a breeding ground for bacteria and fungi. Oba noted that no direct medicine exists for the itching caused by ear fungus, making prevention the only practical approach. The survey of 639 daily earphone users revealed that while 59.4% experience summer discomfort, 57.7% have left it untreated. Generational patterns emerged: Z-gen users show risky habits, working adults neglect chronic discomfort, and older users have low awareness and slower recovery. NTT Sonority recommends open-ear earphones as a summer solution, alongside six prevention tips including limiting ear cleaning and taking breaks every hour.\u003c/p\u003e","blueskyPost":"NTT Sonority's nwm brand warns of 'ear warming' from closed earphones in summer. Survey: 59% of users feel discomfort, but only 15% care for ears. Doctor says prevention is key-no direct medicine for ear fungus itching.","twitterPost":"NTT Sonority's nwm brand warns of 'ear warming' from closed earphones in summer. Survey: 59% of users feel discomfort, but only 15% care for ears. Doctor says prevention is key-no direct medicine for ear fungus itching.","threadsPost":null,"newsletterBlurb":"NTT Sonority's nwm brand held a roundtable with an ENT doctor warning about 'ear warming' from closed earphones in summer. A survey found 59.4% of daily users feel discomfort, but only 14.9% consciously care for their ears. The doctor emphasized prevention over treatment, as no direct medicine exists for ear fungus itching.","attributionJson":"[{\"source\":\"ASCII.jp\",\"url\":\"https://ascii.jp/elem/000/004/413/4413213/?rss\",\"title\":\"話題の\\\"耳カビ\\\"、医師が警鐘！\\\"耳の温暖化\\\"により不快や違和感が増加！NTTソノリティnwm（ヌーム）夏のイヤホンリスクと対策について発表\"}]","lintFlagsJson":null,"lintHits":0,"costUsd":0,"inputTokens":6008,"outputTokens":1609,"status":"published","repairAttempts":0,"nextRepairAt":null,"factsAttemptedAt":1782312526,"createdAt":"2026-06-24T14:41:17.000Z","publishedAt":"2026-06-24T14:45:24.000Z","updatedAt":"2026-06-24T14:45:24.000Z"},"cluster":{"id":"c_671b19f3f39bc491d0e9885f","canonicalTitle":"話題の“耳カビ”、医師が警鐘！‟耳の温暖化“により不快や違和感が増加！NTTソノリティnwm（ヌーム）夏のイヤホンリスクと対策について発表","representativeArticleId":"a_ae9086c04669ac886c4b95e1","sourceCount":1,"writtenSourceCount":1,"writeAttempts":0,"isSolo":true,"entitiesJson":"{\"anime_titles\":[],\"manga_titles\":[],\"work_titles\":[],\"studios\":[],\"people\":[],\"type\":\"news\",\"domain\":\"other\",\"is_roundup\":false}","contentType":"news","status":"published","firstSeenAt":"2026-06-24T05:00:00.000Z","lastSeenAt":"2026-06-24T05:00:00.000Z","updatedAt":"2026-06-24T14:45:24.000Z"},"attribution":[{"source":"ASCII.jp","url":"https://ascii.jp/elem/000/004/413/4413213/?rss","title":"話題の“耳カビ”、医師が警鐘！‟耳の温暖化“により不快や違和感が増加！NTTソノリティnwm（ヌーム）夏のイヤホンリスクと対策について発表"}],"entities":{"anime_titles":[],"manga_titles":[],"work_titles":[],"studios":[],"people":[],"type":"news","domain":"other","is_roundup":false},"keyFacts":["NTT Sonority's thermography experiment showed closed earphones raise ear temperature by about 1.8°C after one hour of wear.","ENT specialist Toshihiko Oba warned at a June 17 roundtable that heat, humidity, and closed earphones create a breeding ground for bacteria and fungi.","A survey of 639 daily earphone users found 59.4% experience summer discomfort, but 57.7% have left it untreated.","Oba noted no direct medicine exists for ear fungus itching, making prevention the only practical approach.","NTT Sonority recommends open-ear earphones and six prevention tips, including limiting ear cleaning and taking breaks every hour."]}