Top 50 Health & Medical Influencers in Japan to Know in 2026

Credentials: Physician; the channel’s About section names 森勇磨 (Yuma Mori) as an occupational physician and internist · Affiliation: Operated by MEDU株式会社 (MEDU Inc.); partner medical institution ウチカラクリニック (Uchikara Clinic) · Last post: 19 September 2026.

1.11M YouTube subscribers. 予防医学ch (Preventive Medicine Channel) explains preventive medicine and lifestyle-related disease through animation for viewers in their forties and older, under a 医師監修 (physician-supervised) label. It is a company-run channel rather than a personal one, animation comes first, and the channel links to online consultations at its partner clinic.

Credentials: Physician; internist (self-reported) · Last post: 28 September 2026.

892K YouTube subscribers. Under the name ドクターハッシー (Dr. Hassie), an internist explains illnesses, health habits and diet for viewers of every generation. Because the audience is not built around one age band or one condition, the channel works as a general health explainer rather than a specialist one.

Credentials: Physician (real name 井拓磨) · Affiliation: Independent · Last post: 28 September 2026 (YouTube); 28 September 2026 (X).

599K YouTube subscribers and 72,625 X followers. A working physician and comedian, he posts short videos of doctors’ in-jokes and medical humour alongside medical explainers, reaching a younger audience; the balance of joke and information changes from video to video.

Credentials: Physician; ophthalmologist (self-reported) · Affiliation: アイケアクリニック (Eye Care Clinic), linked from the channel description · Last post: 27 September 2026.

365K YouTube subscribers. On 100年生きる!眼科チャンネル (“Live to 100! Ophthalmology Channel”), he explains the eye problems viewers worry about. The channel links to his own clinic, whose services include self-pay treatments such as HIFU and a LINE registration.

Credentials: Physician; ophthalmologist (self-reported) · Last post: 28 September 2026.

335K YouTube subscribers. An ophthalmologist explaining eye health and eye disease in plain terms, with cataract, glaucoma and presbyopia among the subjects, topics that concern older viewers in particular.

Credentials: Physician; urologist and gastroenterologist (self-reported) · Affiliation: 大宮エヴァグリーンクリニック (Omiya Evergreen Clinic), 東京泌尿器科クリニック上野 (Tokyo Urology Clinic Ueno) and other clinics · Last post: 27 September 2026.

269K YouTube subscribers. He covers prevention and early detection of disease, and men’s health subjects including AGA (male-pattern hair loss), ED and anti-ageing. The channel leads to his own clinics, which offer insured care and self-pay treatment for AGA, ED, regenerative medicine and exosomes.

Credentials: Physician; ophthalmologist (self-reported) · Last post: 26 September 2026.

144K YouTube subscribers. An ophthalmologist explaining eye disease and everyday eye care carefully and step by step, for a general audience.

Credentials: Physician; cardiologist (self-reported) · Last post: 25 July 2026.

101K YouTube subscribers. Presented as 心臓のお医者さん (the heart doctor), the channel has a cardiologist explaining heart disease, blood pressure and lifestyle habits. The latest upload was on 25 July 2026, so confirm the publishing schedule before planning a date-bound campaign.

Credentials: Physician; infectious-disease specialist (self-reported, X profile) · Affiliation: 大阪大学医学部附属病院 (Osaka University Hospital), infectious diseases and infection control, per his X profile · Last post: 17 May 2026 (X).

222,715 X followers. An infectious-disease physician writing about emerging infections, vaccines and travel medicine, on X and as a contributor to Yahoo!ニュース エキスパート (Yahoo! News Expert). As a university hospital physician, whether he can take part in a company-funded project depends on his institution’s rules.

Credentials: Physician · Affiliation: Independent · Last post: 28 September 2026 (X).

68,591 X followers. He writes about viruses, vaccines and countering medical misinformation for a general audience, in written commentary rather than video. His profile states that he uses affiliate links.

Credentials: Physician; cosmetic surgeon (self-reported via the channel name) · Affiliation: 高須クリニック (Takasu Clinic), as shown in the channel name · Last post: 28 September 2026 (YouTube).

1.06M YouTube subscribers. A practising cosmetic surgeon talking directly to the public, he explains cosmetic surgery and aesthetic procedures in his own voice, alongside commentary on current affairs and more casual talk. The channel leads back to Takasu Clinic’s aesthetic services.

Credentials: Physician; dermatologist (self-reported) · Affiliation: Chair (理事長) of はなふさ皮膚科 (Hanafusa Dermatology) · Last post: 28 September 2026 (YouTube).

433K YouTube subscribers. The head of a dermatology practice offering both insured and aesthetic care, he covers skin conditions, skincare and aesthetic treatments, from everyday skin complaints to routine care. The channel leads back to his own practice.

Credentials: Physician; plastic surgeon (self-reported) · Affiliation: His own skin regenerative-medicine business · Last post: 28 September 2026 (YouTube).

393K YouTube subscribers. Framed as ageing care without cosmetic surgery, the channel has a plastic surgeon explaining skin ageing and skin regenerative medicine to a general audience. Its subject matter is the same as that of the self-pay regenerative-medicine business behind it.

Credentials: Dermatologist (self-reported) · Affiliation: こばとも皮膚科 (Kobatomo Dermatology), as shown in the channel name · Last post: 26 September 2026 (YouTube).

157K YouTube subscribers. A dermatologist explaining how to apply topical medicines, how skincare works and what aesthetic procedures involve, in a practical how-to register aimed at a general audience rather than clinicians.

Credentials: Physician; cosmetic surgeon (self-reported) · Affiliation: General director (総括院長) of Days Beauty Clinic · Last post: 27 September 2026.

88.4K YouTube subscribers. The director of an aesthetic clinic answers viewers’ questions about aesthetic medicine, a Q&A format that reaches people weighing a decision. He also has an Instagram account, @days_harada. The channel leads to his own clinic’s aesthetic services.

Credentials: Physician; dermatologist and aesthetic dermatologist (self-reported) · Affiliation: Chair (理事長) of 医療法人義恵会 (Gikeikai Medical Corporation), which runs 溝の口駅前皮膚科 (Mizonokuchi Ekimae Dermatology) and other clinics · Last post: 4 September 2026 (YouTube).

86.9K YouTube subscribers. A dermatologist who heads a medical corporation running several clinics, she explains skin troubles, skincare and aesthetic dermatology to a general audience, from common complaints to daily care.

Credentials: Physician; dermatologist and holder of a medical doctorate (self-reported, X profile) · Affiliation: Department of Dermatology, Kindai University Faculty of Medicine · Last post: 26 September 2026 (X).

46,256 X followers. A university dermatologist writing about atopic dermatitis, other skin conditions and how medicine is communicated to the public. Alongside his university role he publishes books; as a university-based physician, his ability to take on corporate work may be limited by his institution’s rules.

Credentials: Physician; psychiatrist (self-reported) · Affiliation: Director of 早稲田メンタルクリニック (Waseda Mental Clinic) · Last post: within the past day (main channel); 24 September 2026 (second channel).

746K subscribers on the main channel and 33.1K on a second channel. A psychiatrist explaining depression, developmental disorders, anxiety disorders and other mental-health conditions for a general audience. He runs his own clinic.

Credentials: Psychiatrist (self-reported) · Affiliation: Independent author; represented by 浅井企画 (Asai Kikaku) · Last post: 28 September 2026 (YouTube); 28 September 2026 (X).

705K YouTube subscribers and 275,236 X followers. An author presenting as a psychiatrist, Kabasawa covers mental health, stress, sleep and daily habits, and the channel description says it has been updated every day for more than ten years. The accounts lead to Kabasawa’s books, talks and paid courses.

Credentials: Licensed psychologist (公認心理師); master’s degree in school clinical psychology from Saitama University graduate school (both self-reported) · Affiliation: Runs 人生リノベーション学校 (an online school) · Last post: 3 September 2026 (YouTube).

221K YouTube subscribers. Under the theme of “life renovation”, the channel covers recovery and self-development through psychological, nutritional and music-based approaches. Around it sit an online school, an own-brand supplement called コーダサプリメント (Coda Supplement), piano-therapy audio and books.

Credentials: Physician; psychiatrist (self-reported) · Affiliation: University of Tsukuba, School of Medicine and Health Sciences (筑波大学医学群) · Last post: 23 September 2026 (YouTube).

97.1K YouTube subscribers. The channel is a set of web lectures on psychiatry pitched at the general public, medical students and specialists at once, alongside books and DVDs published through ケアネット (CareNet). As a university-affiliated physician, his corporate work may be limited by university or hospital rules.

Credentials: Physician; internist and psychiatrist, with ten years in each (self-reported) · Affiliation: Works in home-visit medical care · Last post: 28 September 2026 (YouTube).

86.5K YouTube subscribers. A doctor with experience in internal medicine and psychiatry who now works in home-visit care, he speaks to people who find life hard to bear, including those with suicidal thoughts. A consumer product placed inside this content is unlikely to be appropriate.

Credentials: Clinical psychologist (臨床心理士) and licensed psychologist (公認心理師), formerly at a psychiatric hospital (self-reported) · Affiliation: Head of こころのケア研究所 SHINKA (Kokoro no Care Kenkyujo SHINKA), an online psychological practice · Last post: 13 September 2026 (YouTube); 30 August 2026 (X).

68.7K YouTube subscribers and 831 X followers. Tadokoro explains psychology in practical terms for everyday worries and the sense that life is hard going, for a general audience. Outside the channel the work is online counselling and speaking, so a competing counselling or therapy service is a poor fit.

Credentials: Psychiatrist (self-reported; real name not public) · Affiliation: Independent author and speaker · Last post: 28 September 2026 (X); 28 September 2026 (YouTube).

392,492 X followers and 72.2K YouTube subscribers. X is the main platform: short answers to worries about relationships and mental health, written in a distinctive, informal speaking persona. The commercial side is books, talks and media appearances.

Credentials: Physician; psychiatrist (self-reported) · Affiliation: Director of 名駅ふじのメンタルクリニック (Meieki Fujino Mental Clinic), noted in his profile as preparing to open · Last post: 28 September 2026 (X); 22 September 2026 (note).

129,285 X followers. He writes about living with hardship and about mental wellbeing, drawing on stated experience at psychiatric hospitals and a medical prison. He also has Instagram and note accounts, and his commercial side is books, an email newsletter and his clinic.

Credentials: OB/GYN specialist (self-reported; surname not disclosed) · Affiliation: Independent channel · Last post: 27 September 2026.

209K YouTube subscribers. Run from home by a doctor who describes herself as an OB/GYN specialist and a mother of four, the channel shares general health information for a lay audience, centred on women’s bodies and daily health habits.

Credentials: Midwife (self-reported) · Affiliation: NPO法人コハグ (Cohug, a non-profit organisation); official site shiorionuki.com · Last post: 28 September 2026 (YouTube); 23 September 2026 (X).

189K YouTube subscribers and 48,765 X followers. Publishing as Shiorine, with the real name Shiori Onuki on both profiles, the creator makes sex education and body literacy (sex, menstruation, contraception and gender) bright and approachable. Shiorine writes books, including 『CHOICE』 and 『こどもジェンダー』, speaks at events, runs postpartum-care events at public bathhouses, and takes brand work.

Credentials: Physician; OB/GYN specialist (self-reported) · Affiliation: Represented by 女医プラス (Joi Plus) · Last post: 20 September 2026.

79.9K YouTube subscribers. An OB/GYN who is also a professional boxer and belly dancer, she covers health screening, vaccination and everyday concerns about the body.

Credentials: OB/GYN; doctorate in medicine (graduate school of 東京慈恵会医科大学); specialist certifications in women’s health medicine and anti-ageing medicine (all self-reported) · Affiliation: Deputy director of イーク表参道 (a clinic) · Last post: 28 September 2026 (YouTube); 28 September 2026 (X).

76.4K YouTube subscribers and 39,438 X followers. An OB/GYN, sports doctor and yoga instructor, she covers women’s health across life stages, with menopause and PMS prominent, and also publishes on audio platforms such as Voicy. Her X profile lists her as an external occupational physician for Otsuka Holdings, which a competing brand should check first.

Credentials: Physician; OB/GYN (self-reported) · Affiliation: Director of ハシイ産婦人科 (Hashii Obstetrics and Gynaecology), 向日市, Kyoto Prefecture · Last post: 28 September 2026.

61.7K YouTube subscribers. On 『ホッとできる!産婦人科チャンネル』 (roughly “the OB/GYN channel that puts you at ease”), the director of a Kyoto fertility clinic explains trying to conceive and gynaecological conditions for a general audience.

Credentials: Physician; OB/GYN (self-reported) · Affiliation: Director of 丸の内の森レディースクリニック (a women’s clinic); editor-in-chief of the women’s healthcare media crumii · Last post: 28 September 2026 (X); 27 September 2026 (YouTube).

126,695 X followers and 7.03K YouTube subscribers. On X, her main platform, she writes about menstruation, contraception, pregnancy and sexual health for a general audience. Beyond social media she runs her own clinic, publishes books and edits crumii, which a brand should treat as a separate editorial relationship.

Credentials: Physical therapist (self-reported) · Affiliation: 腰痛・肩こり駆け込み寺 (a treatment facility) · Last post: 28 September 2026.

1.6M YouTube subscribers, the largest audience in this guide. 『腰痛・肩こり駆け込み寺』 (roughly “a refuge for back pain and stiff shoulders”) teaches self-care for everyday aches around Yamauchi’s own original method. Yamauchi came to physical therapy after careers in electronic engineering and architectural design, and trained at a hospital specialising in the AKA-博田法 technique.

Credentials: Physical therapist (self-reported) · Affiliation: Head of つながり整体院 (Tsunagari Seitai-in, a manual therapy clinic), Amagasaki, Hyogo Prefecture · Last post: 7 June 2026 (Shorts; the latest long-form video was about three years ago).

310K YouTube subscribers. Under a motto of explaining things clearly and logically, the channel covers self-care for stiff shoulders, back pain and posture, and is closely tied to recruiting clients for Park’s clinic. Current activity is short-form, so ask what Park plans to publish next before booking.

Credentials: Physician; orthopaedic surgeon (self-reported) · Last post: 28 September 2026 (Shorts; the latest long-form video was about a month earlier).

238K YouTube subscribers. Billed as 『ゆるエビデンスの整形外科医』 (roughly “the easy-going evidence orthopaedic surgeon”), he explains pain and movement in the knees, lower back, shoulders and other joints in plain language, with reference to published papers.

Credentials: Physician; orthopaedic specialist with a doctorate in medicine (self-reported) · Affiliation: Director of 中山クリニック (Nakayama Clinic), Akashi, Hyogo Prefecture · Last post: 25 September 2026.

141K YouTube subscribers. An orthopaedic specialist who appears on camera himself, he explains pain in the shoulders, knees and lower back, demonstrates stretches and covers some gastroenterology topics. The channel’s name and handle carry his clinic’s name.

Credentials: Physical therapist, with 26 years in the rehabilitation department of 関東労災病院 (Kanto Rosai Hospital) (self-reported) · Affiliation: Director of コンディション・ラボ (Condition Lab); representative director of 株式会社運動と医学の出版社 (a publisher for medical professionals) · Last post: 27 September 2026.

74.9K YouTube subscribers. Sonobe explains foot, knee and hip pain, how movement in one joint affects another, insoles and self-care for knee pain. The wider business spans a treatment practice, own-brand insoles, books, seminars for medical professionals and a health service called 『健寿ライフ』, so footwear and insole brands should check for overlap first.

Credentials: Physical therapist (self-reported) · Affiliation: Works with the Pilates studios DEP and Leben · Last post: 27 September 2026.

42.1K YouTube subscribers. Take teaches anatomy-based Pilates and self-care for posture, stiff shoulders, back discomfort and an arched lower back, on the boundary between health and fitness. The channel also works as a route to the Pilates studios the creator is connected with.

Credentials: Pharmacist (self-reported) · Affiliation: Individual creator; sells an own-brand supplement through ynlabo.jp · Last post: 23 September 2026 (YouTube); 23 September 2026 (X).

537K YouTube subscribers and 32,292 X followers. Built mainly around fast-paced Shorts, the channel covers gut health (腸活), nutrients, supplements and over-the-counter medicines for a general audience. The creator sells an own-brand all-in-one gut-health supplement (菌活オールインワンサプリメント) and routes viewers to an official LINE account.

Credentials: Nurse and public health nurse (看護師・保健師), self-reported · Affiliation: Press releases about Matsuda’s work are issued by Belle Lus Co., Ltd. (Belle Lus株式会社) · Last post: 28 September 2026 (YouTube); 28 September 2026 (X).

221K YouTube subscribers and 18,726 X followers. A former nurse and public health nurse now working as a diet instructor, Matsuda presents an eating-based approach to weight management for women under the name 瞬食ダイエット and runs a paid diet-coaching programme. There is also an Instagram account and an Ameba blog.

Credentials: Nurse with more than ten years in practice (self-reported) · Affiliation: Individual creator · Last post: 28 September 2026 (YouTube).

209K YouTube subscribers. Presented as a “sharp-tongued nurse” (毒舌ナース) and a mother of three, she talks frankly about the working reality of hospitals and the worries of nurses and nursing students, a direct route to healthcare workers rather than patients. Day-in-the-life videos, kit checks and frank Q&As about the job already fit the channel.

Credentials: Pharmacist; instructor of the Japanese Society of Anti-Aging Medicine, CILA advanced cosmetic-ingredient specialist and top-grade Cosme Concierge of the Japan Cosmetic Certification (all self-reported) · Affiliation: Individual creator · Last post: 26 August 2026 (YouTube).

71.3K YouTube subscribers. From a pharmacist’s point of view, the channel works through how to choose between over-the-counter medicines and examines the ingredients and claimed effects of cosmetics and quasi-drugs. The About page says sponsored work is limited to products the creator has judged favourably after looking at the numbers.

Credentials: Hospital pharmacist (self-reported) · Affiliation: Individual creator; runs an online school on OTC medicines through coeteco · Last post: 19 September 2026 (YouTube); 28 September 2026 (X); 18 September 2026 (note).

32.5K YouTube subscribers and 15,732 X followers. The channel explains how to choose over-the-counter medicines by symptom, and part of it is aimed at registered sellers (登録販売者) and pharmacists who advise customers at the counter. The creator also writes on note and keeps a blog at allegra.tokyo/otc.

Credentials: Registered dietitian (管理栄養士) and cookery writer (self-reported) · Affiliation: 株式会社ウェルネス (Wellness Co., Ltd., wellnesse.co.jp) · Last post: 28 September 2026 (YouTube).

684K YouTube subscribers. ウェルネスキッチン (Wellness Kitchen) publishes recipes framed as 食べ養生, looking after yourself through what you eat, for a middle-aged and older audience. Sekiguchi has published 『春夏秋冬疲れとりごはん』 (KADOKAWA) and sells own-brand goods and aprons through an online shop, nufu.online.

Credentials: Registered dietitian (管理栄養士); SAKE DIPLOMA (both self-reported) · Affiliation: Individual creator · Last post: 28 September 2026 (YouTube).

289K YouTube subscribers. ゆり子のおいしい暮らし publishes five-day weekday menus with a shopping list attached, alongside snacks to go with sake. Yuriko has two books on sale through Rakuten Books, posts recipes on Nadia and runs a Rakuten ROOM affiliate page.

Credentials: Registered dietitian (管理栄養士), self-reported · Affiliation: Individual creator · Last post: 28 September 2026 (YouTube).

112K YouTube subscribers. The channel publishes high-protein, low-carbohydrate diet recipes in a deliberately low-effort, time-saving (ずぼら) style. Morishita also offers paid online diet coaching, develops and supervises diet food products, supervises recipe books and speaks at seminars, so a food brand should ask which products Morishita is currently tied to.

Credentials: Registered dietitian (管理栄養士), self-reported · Affiliation: Freelance dietitian · Last post: 11 September 2026 (YouTube).

66.6K YouTube subscribers. The channel has two strands: practical gut-health habits (腸活) under the line 腸から叶える, and what it is like to work as a freelance registered dietitian. Sasamura also offers courses and one-to-one guidance, and has an Instagram account.

Credentials: Dentist (self-reported) · Affiliation: Representative director of 一般社団法人お口プラス (Okuchi Plus, a general incorporated association) · Last post: 25 September 2026 (Shorts; the latest long-form video was about three years ago).

172K YouTube subscribers. As ロン毛の院長 (“the long-haired clinic director”), Inaba uses a dental clinic as the set for entertainment videos about teeth, now mainly as Shorts. The About page also describes work as a TV and Netflix performer and music releases, and Inaba has published a book with KADOKAWA.

Credentials: Dentist (self-reported) · Affiliation: Individual creator · Last post: 28 September 2026 (YouTube); 6 September 2026 (X).

171K YouTube subscribers and 1,046 X followers. Presenting as a newly qualified dentist (新米歯科医師), the creator shares dental trivia and the everyday humour of dental work, mainly as Shorts, in a quick, light format suited to younger viewers.

Credentials: Dentist; graduated from the Hokkaido University School of Dental Medicine in 2013 and trained in oral surgery at Nikko Memorial Hospital (self-reported) · Affiliation: Director of 前岡歯科医院 (Maeoka Dental Clinic), Ichinomiya, Aichi Prefecture; runs the owned media site Dentalhacker · Last post: 28 September 2026 (YouTube).

168K YouTube subscribers. Billed as 歯科医の暴露チャンネル, a dentist’s “exposé” channel, it has two threads: building oral habits so viewers need the dentist less, and how the dental business works behind the scenes. Maeoka has also published a book. The tone is often critical of the industry, so review recent videos before briefing.

Credentials: Dentist; re-entered dental school at 30 (self-reported) · Affiliation: Runs a dental practice · Last post: 26 September 2026 (YouTube).

110K YouTube subscribers. Under the theme of protecting your teeth to the age of 100 (あなたの歯を100歳まで), Okubo hosts a live stream every Thursday answering viewers’ questions about their teeth, and the channel also runs a paid membership.