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腹八分目 hara hachibunme Eating Until Eight Parts Full

腹八分目, stopping a meal at eight parts full, followed from an Edo physiognomist's rule of diet through the Meiji proverb books into English.

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Japanese Scroll of Eating Until Eight Parts Full (hara hachibunme) — Calligraphy by Eri Takase
Eating Until Eight Parts Full腹八分目hara hachibunme

Original art by Master Calligrapher Eri Takase

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Abstract

腹八分目 hara hachibunme, and the shorter 腹八分 hara hachibu, is the practice of stopping a meal before one is full, at about eight parts in ten; the dictionaries give with it the saying 腹八分に医者いらず, eight parts of the belly and no need of a doctor [1][2]. The earliest known use of 腹八分 as a measure of eating, in the sources read, is a physiognomist's: Mizuno Nanboku 水野南北, in a book cut in 1813, writes 尤腹八分を以て節とす, above all, take eight parts of the belly as the measure [3]. A century earlier the poet Kikaku 其角 had written of a conch-shell cup filled to eight parts of its belly [4]; in 1871 a moral tract wrote 腹八合, eight gō of the belly, beside Nanboku's own habit of two meals a day, morning and evening, of two bowls [5]; and by the 1890s 腹八分目 stood in the proverb lists, and 腹八分に醫者いらず in print, the 1910 proverb dictionary citing no Japanese source for it [6][7][8][9]. Kaibara Ekiken 貝原益軒's 養生訓 of 1713, to which a modern commentary sets the word 腹八分目, counsels, in the Meiji text read, stopping at seven or eight parts and at eight or nine, and a search of its full text finds no 腹八分 [10]; in English the longer saying is hara hachi-gō ni isha irazu in a proverb book read in its second edition of 1958 (first edition 1955), and from 2001 a book on the Okinawan diet and health gives hara hachi bu as their secret [11][12].

Overview

The sense. デジタル大辞泉: はら‐はちぶ【腹八分】 満腹するまで食べないで、少し控えめにしておくこと。腹八分目, not eating until full, holding a little back; 腹八分目. The 精選版 日本国語大辞典: 満腹するまで食べないで、八分目ぐらいでやめておくこと。腹八合。「腹八分に医者いらず」, not eating until full, stopping at about eight parts in ten; 腹八合; "eight parts of the belly and no need of a doctor" [1]. Of the saying, デジタル大辞泉: 大食いをせずにいつも腹八分でやめておけば健康でいられるということ, that if one does not overeat and always stops at eight parts of the belly, one stays healthy [2]. JMdict gives 腹八分 as eating moderately; moderation in eating; eating until 80% full, 腹八分目 as being moderate in eating; stopping short of stuffing oneself, and the longer form, marked a proverb, as eating moderately keeps the doctor away [13][14][15]. In every dictionary read it is a rule about food. The older measure behind it, stopping at seven or eight parts of anything, is wider, and is set out below.

The words. 腹 hara is the belly. 八分 hachibu is eight 分 bu, eight tenths. 八分目 hachibunme is, in デジタル大辞泉, 10分の8の分量。8割程度, eight tenths of a quantity; about eighty percent, and then 物事を控えめにすること, holding back in things, with 「腹八分目」 as its example; the 精選版 日本国語大辞典's first instance of 八分目 is a vessel's, 燗鍋取て八分目つげば, taking the warming pot and pouring to eight tenths, from a story-book of 1706 [16]. The 1813 print glosses its 腹八分 はらはちぶ in kana beside the characters, hara hachibu [3]. 腹八合 hara hachigō says the same with a measure of volume, eight 合 gō, eight tenths of a 升 shō; the 精選版 日本国語大辞典 and the 1910 proverb dictionary treat 腹八合 and 腹八分目 as one word [1][9]. The forms are one word in three measures: 腹八分, 腹八分目 and 腹八合.

The text in English. The proverb books render the longer saying from the 腹八合 form: Hara hachi-gō ni isha irazu, If your inside (hara) is eight-tenths full, you will need no doctor (isha) in Rokuo Okada's book of 1958 [11], and Hara hachi-gō isha irazu, Temperance calls no doctor, in Daniel Crump Buchanan's of 1965 [17]. A romaji dictionary for foreigners of 1991 teaches hara-hachi-bu in a sentence [18]. From 2001 English books on Okinawa give hara hachi bu as their practice, only eating till they are 80 percent full [12][19]. JMdict's eating until 80% full is the gloss now current [13].

The historical record

1707, Kikaku's conch. The haikai poet Kikaku (1661–1707) [20], in a prose piece of his posthumous collection 『類柑子』 (its inner title 類柑文集), printed in 1707 [21]: an outing by boat dated the ninth month of 1702, in which the hokku 懸出の貝にもてなす新酒かな, new sake, offered in the conch of the kakedashi, is followed by the scene it draws on. Travelers, かけ出の同行, the kakedashi and their companions, go into a house to beg the price of a meal, and are poured the season's sake: 時にとつての早稲作り中酌なんどもり流すに貝の腹八分に見て心よくほし礼貝以て通るもあり, the season's early-rice sake and the like poured out for them, he sees his conch filled to eight parts of its belly and drains it gladly, and some go on their way with a conch of thanks [4][22]. The 腹 is the conch's, a vessel's measure, and the line says nothing of a person's eating. It is the earliest known 腹八分, in the sources read. Whether Kikaku was turning a phrase already said of people, the passage does not show.

1813, Mizuno Nanboku's rule. Mizuno Nanboku (1757–1834), a physiognomist of Ōsaka, held that a person's fortune follows from food; the 日本人名大辞典 gives as his maxim 生涯の吉凶ことごとく食より起る, the good and ill of a whole life all arise from food, from his 修身録 [23]. His 『相法脩身録』 Sōhō shūshinroku, physiognomy and the cultivation of the self, was cut in the first month of 1813 (its colophon: 文化十酉正月刻成), with a postface of 1812 [3]. In its first book, closing a passage on whether one's measure of food is fixed, it says: 尤腹八分を以て節とす, above all, take eight parts of the belly as the measure [3][24]. The next words begin an exception for the warrior's table. Here 腹八分 is a measure a person keeps, read はらはちぶ, and no doctor is in it. It is the earliest known use of 腹八分 for eating, in the sources read.

1871, 腹八合 beside Nanboku. Bingo Kiroku 備後喜六 (1819–1887), 『勧業修養粗話』, a tract on industry and self-cultivation, in its supplement: 一生の食量も天より授る定數あれば常に腹八合に飲食してよく生を養ふ時は身の壮健なるのみならず命も延るゝことぞ, since even a lifetime's measure of food is a fixed number granted by Heaven, if one always eats and drinks to eight gō of the belly and nourishes one's life well, not only is the body strong but life itself is lengthened [5]. On the next page it tells Nanboku's own practice by name: 水野南北生涯朝夕二食二椀にして, Mizuno Nanboku, his whole life, ate two meals a day, morning and evening, of two bowls [5]. It is the earliest known 腹八合, in the sources read. The measure of the belly and Nanboku's rule of food stand on consecutive pages.

1891 and 1893, the proverb list and Nanboku again. 『金諺一万集』, ten thousand golden sayings, compiled by Shibagaki Fuku 柴垣馥, lists ○腹八分目 among its sayings, between ○思ハレズ and ○壺算用 [6]. In 1893 Tanahashi Ayako 棚橋絢子 edited a book of Nanboku's teaching, 『修身実験録』, which gives his rule in Meiji wording: 尤も食量は腹八分を以て節とするなり, above all, the measure of food takes eight parts of the belly as its limit [7]. By the 1890s, then, 腹八分目 is a saying in a list, and the rule is still Nanboku's in a book under his name.

1898 and 1901, the saying with the doctor. The longer saying is in print in 1898: the magazine 『日本乃家庭』 of that August numbers it among a list of proverbs, 三十七、腹八分に醫者いらず, thirty-seven: eight parts of the belly and no need of a doctor [8], and a piece printed in 『家庭雑誌』 that May advises 食物は腹八分に醫者入らず, in food, eight parts of the belly and no doctor needed [25]. In 1901 the proverb collection 『皇国俚諺叢』 enters 腹八分に醫者いらす with only its editor's note, that the saying may truly be called the secret of health; the source given just before it, 〔俚言集覽〕, belongs to the entry above, 腹は海道 [26].

1910, the proverb dictionary. Fujii Otoo 藤井乙男's 『諺語大辞典』 enters 【腹八合ニ醫者イラズ】 腹八分ニともいふ。大食せざれば病に犯されず, also said 腹八分ニ. If one does not eat much, illness does not strike, and sets beside it a Chinese saying from the collection 恒言錄, 晩飯少喫口、活到ニ九十九, eat a mouthful less at supper and live to ninety-nine, and the English Temperance is the best physic; under 【腹八分目】 it writes 腹八合に同じ, the same as 腹八合 [9]. It cites no Japanese text for either form.

The attribution to Ekiken. A modern commentary on the 養生訓 of Kaibara Ekiken (1630–1714) [27], written in 1713 [28], summing up its teaching in its own words, writes 腹八分目にし、食事のあとはかるい運動をします, eat to eight parts and take light exercise after a meal [29]. Ekiken's text says it twice and in other words. On rare food: 珍美の食に對すとも、八九分にてやむべし。十分に飽き滿つるは、後の禍なり, even before rare and delicious food, stop at eight or nine parts; to eat one's fill to the full is the source of later harm; and on all food and drink: 酒食茶湯ともに、よきほどゝ思ふよりも、ひかへて七八分にて、猶も不足と思ふ時、早くやむべし, with wine, food, tea and broth alike, hold back short of what seems the right amount, and stop early, at seven or eight parts, while it still feels too little [10]. The counsel is the same; the words 腹八分 are not found in the text read, by the National Diet Library's search of its full text (0 hits).

What is not a source. The merchant's handbook 『商人生業鑑』 of Iwagaki Mitsusada 岩垣光定, with a postface of 1757 [30], says of a man's own strength: 何事も七八分にて止むべし、十分にはり詰ぬがよし、月ならば十三夜とは、面白きことわざなりとおもふ, in everything stop at seven or eight parts; better not to draw it to the full: "for the moon, the thirteenth night", I think a fine saying [31]. It is the wider rule, of a bow not drawn to breaking, and not about food. The 1910 dictionary prints the Chinese 晩飯少喫口、活到ニ九十九 with the Japanese and does not call it the source, and no witness read makes it the origin [9]. And Ekiken's 七八分 and 八九分 are the same counsel in other words, not the source of 腹八分 [10].

腹八分目 in English

1958, Okada. Rokuo Okada, Japanese Proverbs and Proverbial Phrases (first edition 1955; read in the second, 1958), enters Hara hachi-gō ni isha irazu, If your inside (hara) is eight-tenths full, you will need no doctor (isha), and explains: The phrase "filling eight-tenths of one's inside" means "moderation in eating." We are healthy through temperance, and temperance is the best physic [11]. His romaji follows the 腹八合 form, and his temperance is the best physic is the English parallel the 1910 dictionary had printed [9].

1965, Buchanan. Daniel Crump Buchanan, Japanese Proverbs and Sayings: Hara hachi-gō isha irazu: "Temperance calls no doctor." (Lit., "The belly eight-tenths full needs no physician.") English parallel: "Temperance is the best physic." [17]. The same form, and the same English parallel. His romaji drops the particle ni that every Japanese witness of the saying read here carries.

1991, Shibata. A romaji dictionary for foreigners, under eat, teaches the phrase in a sentence: to eat moderately. = kenko-no hi-ketsu-wa hara-hachi-bu-ni shite-oku koto-desu, the secret of health is to keep to eight parts of the belly [18].

2001 and after, Okinawa. Bradley J. Willcox, D. Craig Willcox and Makoto Suzuki, The Okinawa Program, write that Okinawans stay lean by eating a low-calorie, unrefined complex carbohydrate diet, practicing hara hachi bu (only eating till they are 80 percent full), set it under a heading Hara Hachi Bu—Eat Only Until You Are 80 Percent Full, and say of Okinawans that they tend to stop eating before they are bursting at the seams. They call their secret hara hachi bu [12]. Dan Buettner's The Blue Zones visits Kamada Nakazato, a 102-year-old woman living on the Motobu Peninsula, of whom it is said that she says hara hachi bu, and that keeps her from eating too much; his companion Craig calls it a Confucian-inspired adage, All of the old folks say it before they eat, Buettner writes that at table with Okinawan elders you will hear them intone this Confucian-inspired adage before eating, and he asks How do you think this idea of hara hachi bu came about? [19]. In these books the phrase is Okinawa's. No Japanese witness read here gives the saying a Confucian source; the nearest is the Chinese saying the 1910 dictionary sets beside it as a parallel [9]. The oldest Japanese witnesses read here, of 1707, 1813 and 1871, are a century and more older than these books, and no witness read from before 2001 speaks of Okinawa; the earliest known use for eating, in the sources read, is Nanboku's, a man of Ōsaka [3][23].

2004, Trimnell. Edward Trimnell's guide to Japanese proverbs enters the 腹八分 form, with its particle: HARA HACHIBU NI ISHA IRAZU, 腹八分に医者いらず, "Temperance avoids the need for doctors.", and glosses it an ounce of prevention is worth a pound of cure [32].

Today. JMdict gives 腹八分目 as being moderate in eating; stopping short of stuffing oneself, and 腹八分 as eating until 80% full [14][13]. A rendering that keeps the words says eight parts full, eight tenths of the belly: the measure is the point, and moderation alone loses it.

A reading

As I read the witnesses, 腹八分目 is a measure before it is a proverb. Kikaku's conch filled to eight parts of its belly is the earliest 腹八分 known, and it is a cup's; the first to make it a measure a person keeps is Nanboku, whose physiognomy held that a fixed, modest diet changes one's fortune, and whose rule, 腹八分を以て節とす, is retold under his name in 1871 and 1893. Ekiken, to whom it is usually credited, gave the same counsel in other numbers, seven or eight parts, eight or nine. The saying with the doctor is a Meiji proverb in the books and magazines read, in print from 1898, and the 1910 dictionary cites no Japanese source for it. I take the four characters on a scroll as Nanboku's measure in the proverb's form: stop at the eighth tenth.

On the reading, I sign hara hachibunme, the reading JMdict gives the four characters, はらはちぶんめ, with 八分目 read はちぶんめ in the デジタル大辞泉 [14][16]; the shorter 腹八分 is hara hachibu, as the デジタル大辞泉 and the 1813 print give it [1][3].

Notes

The 1707 print reads 礼貝以て通るもあり; a typeset of 1914 prints 禮貝吹いて通るもあり, some go on blowing a conch of thanks [4][22]. The sense of 貝の腹八分 is the same in both.

In the 1813 print the clause after 節とす is cursive and runs on; a typeset of the twentieth century prints it 然れ共武家の食は又別なり. The history quotes the print only through 節とす [3].

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Japanese Scrolls by Master Calligrapher Eri Takase

Japanese Scroll of Eating Until Eight Parts Full (hara hachibunme) in a block font by Master Japanese Calligrapher Eri Takase
腹八分目VB5JBlock
Japanese Scroll of Eating Until Eight Parts Full (hara hachibunme) in a cursive font by Master Japanese Calligrapher Eri Takase
腹八分目VC5JCursive
Japanese Scroll of Eating Until Eight Parts Full (hara hachibunme) in Master Japanese Calligrapher Eri Takase's own style (Eri's Choice)
腹八分目VD5JEri's Choice
Japanese Scroll of Eating Until Eight Parts Full (hara hachibunme) in a semi-cursive font by Master Japanese Calligrapher Eri Takase
腹八分目VS5JSemi-Cursive

Sources not seen

『日本国語大辞典』 第二版, 小学館, the entries 腹八分 and 腹八合, served online by JapanKnowledge (japanknowledge.com). The first example under each would name the dictionary's oldest attestation, and could set the word earlier than 1707 or 1813.

『譬喩尽並ニ古語名数』 (たとえづくし), compiled by 松葉軒東井, preface 天明六 (1786), one manuscript in eight volumes, 龍谷大学大宮図書館 (国書データベース, work 574163, which classes it under language). A collection of sayings of the generation before Nanboku; it would show whether 腹八分 or 腹八合 stood among the sayings a generation before Nanboku printed his rule.

A reader with access to any of these is invited to write to Takase Studios at Tim@Takase.com.

References

  1. 「腹八分」, デジタル大辞泉 and 精選版 日本国語大辞典, at kotobank. https://kotobank.jp/word/%E8%85%B9%E5%85%AB%E5%88%86-605068
  2. 「腹八分に医者いらず」, デジタル大辞泉, at kotobank. https://kotobank.jp/word/%E8%85%B9%E5%85%AB%E5%88%86%E3%81%AB%E5%8C%BB%E8%80%85%E3%81%84%E3%82%89%E3%81%9A-605069
  3. 水野南北, 『相法脩身録』 (南北相法極意) 巻一, 水野南北藏版, 文化十酉正月刻成 (1813), postface 文化壬申 (1812), the copy of 新城図書館 牧野文庫 in 国文学研究資料館's microfilm, canvas 17 (the passage) and canvas 148 (colophon and postface). 国書データベース. https://doi.org/10.20730/100146934
  4. 其角, 『類柑子』 (内題 類柑文集), 宝永四 (1707), 巻上, 浦あそび, the copy of 神戸大学附属図書館, canvas 43. 国書データベース. https://doi.org/10.20730/300052851
  5. 備後喜六, 『勧業修養粗話』 附録, 河内屋和助, 1871, scans 43–44, National Diet Library. https://dl.ndl.go.jp/pid/1911339/1/43
  6. 柴垣馥 編, 『金諺一万集』, 1891, scan 252, National Diet Library. https://dl.ndl.go.jp/pid/755160/1/252
  7. 水野南北 著, 棚橋絢子 編, 『修身実験録 : 一名・出世の直道』, 1893, scan 7, National Diet Library. https://dl.ndl.go.jp/pid/756513/1/7
  8. 『日本乃家庭』 4巻2号, 1898年8月, snippet view, National Diet Library. https://dl.ndl.go.jp/pid/1578576
  9. 藤井乙男 編, 『諺語大辞典』, 1910, p. 828, scan 431, National Diet Library. https://dl.ndl.go.jp/pid/862766/1/431
  10. 貝原益軒, 『養生訓』, in 『益軒十訓』 下, 大町桂月 校, 1911, scans 31 and 33, National Diet Library. https://dl.ndl.go.jp/pid/754686/1/31
  11. Rokuo Okada, Japanese Proverbs and Proverbial Phrases, Japan Travel Bureau, second edition 1958 (first edition 1955), pp. 54–55.
  12. Bradley J. Willcox, D. Craig Willcox and Makoto Suzuki, The Okinawa Program, Clarkson Potter, 2001, pp. 49, 86–87 by its index, read in fragments through the Internet Archive's full-text search of its lending copy. https://archive.org/details/okinawaprogramho0000will
  13. JMdict 1748170, 腹八分, at jisho.org. https://jisho.org/word/%E8%85%B9%E5%85%AB%E5%88%86
  14. JMdict 2052210, 腹八分目, at jisho.org. https://jisho.org/word/%E8%85%B9%E5%85%AB%E5%88%86%E7%9B%AE
  15. JMdict 2835168, 腹八分目に医者いらず, marked proverb, in the EDRDG's JMdict file (the house's copy at gokanji.com). https://www.edrdg.org/wiki/index.php/JMdict-EDICT_Dictionary_Project
  16. 「八分目」, デジタル大辞泉 and 精選版 日本国語大辞典, at kotobank. https://kotobank.jp/word/%E5%85%AB%E5%88%86%E7%9B%AE-602076
  17. Daniel Crump Buchanan, Japanese Proverbs and Sayings, University of Oklahoma Press, 1965, p. 21. https://archive.org/details/japaneseproverbs00buch
  18. Shibata Masaaki, English-Japanese Dictionary in Roma-ji for One Million Foreigners, Sotakusha, 1991, under eat, read in a fragment through the Internet Archive's full-text search of its lending copy. https://archive.org/details/englishjapanesed0000shib
  19. Dan Buettner, The Blue Zones, National Geographic Society, the printing dated 2009, p. 104 by the fragment's running head, read in fragments through the Internet Archive's full-text search of its lending copy. https://archive.org/details/bluezones00danb
  20. 「宝井其角」, デジタル大辞泉 and ブリタニカ国際大百科事典 小項目事典, at kotobank. https://kotobank.jp/word/%E5%AE%9D%E4%BA%95%E5%85%B6%E8%A7%92-18634
  21. 「類柑子」, デジタル大辞泉 and 精選版 日本国語大辞典, at kotobank. https://kotobank.jp/word/%E9%A1%9E%E6%9F%91%E5%AD%90-660303
  22. 佐々醒雪, 巌谷小波 校, 『名家俳文集』, 1914, 浦あそび, p. 184, scans 106–107, National Diet Library. https://dl.ndl.go.jp/pid/950167/1/106
  23. 「水野南北」, デジタル版 日本人名大辞典+Plus, at kotobank. https://kotobank.jp/word/%E6%B0%B4%E9%87%8E%E5%8D%97%E5%8C%97-1112429
  24. 水野南北, 『相法脩身録』 巻一, 文化十 (1813), a second copy, of 京都府立京都学・歴彩館, canvas 17. 国書データベース. https://doi.org/10.20730/100436413
  25. 『家庭雑誌』 116号, 1898年5月, snippet view, National Diet Library. https://dl.ndl.go.jp/pid/11206356
  26. 松本真弦 編, 『皇国俚諺叢』, 1901, scan 39, National Diet Library. https://dl.ndl.go.jp/pid/767884/1/39
  27. 「貝原益軒」, デジタル大辞泉 and 日本大百科全書 (ニッポニカ), at kotobank. https://kotobank.jp/word/%E8%B2%9D%E5%8E%9F%E7%9B%8A%E8%BB%92-15644
  28. 「養生訓」, デジタル大辞泉 and 精選版 日本国語大辞典, at kotobank. https://kotobank.jp/word/%E9%A4%8A%E7%94%9F%E8%A8%93-145721
  29. 貝原益軒 著, 蓮村誠 訳・解説, 『新釈 養生訓 : 日本人が伝えてきた予防健康法』, PHP研究所, 2014, 総論上, the commentary on 内欲 and 外邪.
  30. 『商人生業鑑』, the work record, 宝暦七跋 (1757), 岩垣光定. 国書データベース. https://kokusho.nijl.ac.jp/work/81016
  31. 岩垣光定, 『商人生業鑑』 巻之一, in 『日本教育文庫 訓誡篇 下』, 同文館, 1911, p. 365, scan 196, National Diet Library. https://dl.ndl.go.jp/pid/1708791/1/196
  32. Edward Trimnell, Tigers, Devils, and Fools: A Guide to Japanese Proverbs, Beechmont Crest Publishing, 2004, p. 42.

Authors

Tim Jackowski (Systems Architect, Takase Studios, LLC) · 典 Ten (Anthropic Claude Opus 5.5, Takase Studios, LLC)

AI written · Ten wrote the history. Tim Jackowski commissioned it and answers for it.

Checked · Takase Studios (an address check by script), 2026-10-27, citations — every reference with a web address opened and the quoted words looked for at each, with controls that must fail and did; every address answered as the history states, and the dictionary dates were checked live, Ekiken's years given their own reference and three reference wordings corrected at the library records · two fresh-context readers (Claude), 2026-10-27, every claim in the page's summary block traced to its source, claim by claim: round 1 failed from one reader on one wrong fact, not conceded, since the page image shows the note on Okinawa closing a different entry of the 1910 dictionary; round 2 passed from both with no wrong fact, with wordings corrected in the pass, among them the 'every source read' scoped to the dictionaries, the earliest finds scoped to the sources read, and the absence of 腹八分 in the 養生訓 named by its full-text search

Research depth: step 3 of our 10-step ladder, foundation complete · October 2026

Cite as: Tim Jackowski and Ten, "Philology of 腹八分目 (hara hachibunme)," Takase Studios, 2026, https://takase.com/library/philology/hara-hachibunme.