{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,16]],"date-time":"2026-03-16T11:20:19Z","timestamp":1773660019301,"version":"3.50.1"},"reference-count":0,"publisher":"BMJ","issue":"5821","license":[{"start":{"date-parts":[[1972,7,29]],"date-time":"1972-07-29T00:00:00Z","timestamp":81216000000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.bmj.com\/company\/legal-information\/terms-conditions\/legal-information\/tdm-licencepolicy"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Br Med J"],"published-print":{"date-parts":[[1972,7,29]]},"abstract":"<jats:p>\n                    Vitamin B\n                    <jats:sub>12<\/jats:sub>\n                    , thiocyanate, and folate levels in the blood were estimated in 69 apparently normal subjects, of whom 26 were non-vegetarian non-smokers, 19 non-vegetarian smokers, 15 vegetarian non-smokers, and nine vegetarian smokers. The serum total (cyanide-extracted) B\n                    <jats:sub>12<\/jats:sub>\n                    level (value A) ranged from 105 to 728 pg\/ml, with a mean of 292 pg\/ml. The highest values were found in non-vegetarian non-smokers and the lowest in vegetarian smokers. There was no significant difference in value A between smokers as a group and non-smokers as a group. On the other hand, in vegetarians value A was very significantly lower than in non-vegetarians regardless of their smoking habits.\n                  <\/jats:p>\n                  <jats:p>\n                    It is suggested that A may represent both the protein-bound and free forms of vitamin B\n                    <jats:sub>12<\/jats:sub>\n                    in the blood, and B mainly the free B\n                    <jats:sub>12<\/jats:sub>\n                    , which may be the physiologically active form. The plasma thiocyanate level varied from 1\u00b70 to 15 \u03bcmol\/100 ml, being, as expected, much higher in smokers (mean 8\u00b720 \u03bcmol\/100 ml) than in non-smokers (mean 2\u00b702 \u03bcmol\/100 ml). There was a rough correlation between falling B\n                    <jats:sub>12<\/jats:sub>\n                    levels and rising thiocyanate levels. The serum folate level ranged from 2\u00b775 to 15\u00b775 ng\/ml, and was slightly but significantly higher in vegetarians (mean 6\u00b760 ng\/ml) than in non-vegetarians (mean 4\u00b779 ng\/ml), reflecting the greater content of folate in a vegetarian diet.\n                  <\/jats:p>","DOI":"10.1136\/bmj.3.5821.260","type":"journal-article","created":{"date-parts":[[2009,4,8]],"date-time":"2009-04-08T15:21:07Z","timestamp":1239204067000},"page":"260-263","source":"Crossref","is-referenced-by-count":47,"title":["Effect of Vegetarianism and Smoking on Vitamin B\n                    <sub>12<\/sub>\n                    , Thiocyanate, and Folate Levels in the Blood of Normal Subjects"],"prefix":"10.1136","volume":"3","author":[{"given":"D. K.","family":"Dastur","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. V.","family":"Quadros","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N. H.","family":"Wadia","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M. M.","family":"Desai","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"E. P.","family":"Bharucha","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1972,7,29]]},"container-title":["BMJ"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/data.bmj.org\/tdm\/10.1136\/bmj.3.5821.260","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/syndication.highwire.org\/content\/doi\/10.1136\/bmj.3.5821.260","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,12,9]],"date-time":"2025-12-09T13:48:53Z","timestamp":1765288133000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.bmj.com\/lookup\/doi\/10.1136\/bmj.3.5821.260"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1972,7,29]]},"references-count":0,"journal-issue":{"issue":"5821","published-online":{"date-parts":[[1972,7,29]]},"published-print":{"date-parts":[[1972,7,29]]}},"alternative-id":["10.1136\/bmj.3.5821.260"],"URL":"https:\/\/doi.org\/10.1136\/bmj.3.5821.260","relation":{},"ISSN":["0007-1447","1468-5833"],"issn-type":[{"value":"0007-1447","type":"print"},{"value":"1468-5833","type":"electronic"}],"subject":[],"published":{"date-parts":[[1972,7,29]]}}}