{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T14:05:18Z","timestamp":1785333918405,"version":"3.55.0"},"reference-count":28,"publisher":"Wiley","issue":"5","license":[{"start":{"date-parts":[[2017,11,3]],"date-time":"2017-11-03T00:00:00Z","timestamp":1509667200000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"funder":[{"DOI":"10.13039\/100001698","name":"Israel Cancer Research Fund","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100001698","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Intl Journal of Cancer"],"published-print":{"date-parts":[[2018,3]]},"abstract":"<jats:p>Male breast cancer (MBC) accounts for 1% of all breast cancer. Adult obesity and tallness are risk factors for MBC, but the role of adolescent fatness is largely unknown. We aimed to assess the association between body mass index (BMI) in adolescence and the incidence of MBC in a large cohort of 16\u2010 to 19\u2010year\u2010old Israeli males. 1,382,093 Jewish Israeli males aged 16\u201319 who underwent anthropometric measurements, a general intelligence test (GIT) and other examinations during 1967\u20132011, were followed up to December 31, 2012 for MBC incidence. Cox proportional hazards models assessed the association between adolescent BMI (as WHO BMI categories and as age\u2010specific CDC percentiles) and time to MBC diagnosis, adjusting for sociodemographic covariates. Of 100 MBC cases diagnosed during 29,386,233 person\u2010years of follow\u2010up, 97 were included in multivariable analyses. Compared to \u201chealthy\u201d BMI (18.5\u201324.9 kg\/m<jats:sup>2<\/jats:sup>) and adjusted for year of birth, country of origin and GIT score, higher adolescent BMI was associated with higher MBC risk: hazard ratio (HR)\u2009=\u20092.01 (95% confidence interval [CI] 1.14\u20133.55, <jats:italic>p<\/jats:italic>\u2009=\u20090.015) in overweight (25.0\u2009\u2264\u2009BMI\u2009&lt;\u200930.0 kg\/m<jats:sup>2<\/jats:sup>) adolescents; and HR\u2009=\u20094.97 (95%CI 2.14\u201311.53, <jats:italic>p<\/jats:italic>\u2009=\u20090.0002) in obese (BMI\u2009\u2265\u200930.0 kg\/m<jats:sup>2<\/jats:sup>) adolescents. When CDC age\u2010specific BMI percentiles were assessed results were similar and statistically significant for obesity. In addition, low (<jats:italic>vs<\/jats:italic>. high) GIT score (HR\u2009=\u20094.76, 95%CI 1.96\u201312.50, <jats:italic>p<\/jats:italic>\u2009=\u20090.001) and European (<jats:italic>vs<\/jats:italic>. west\u2010Asian) origin (HR\u2009=\u20091.99, 95%CI 1.19\u20133.34, <jats:italic>p<\/jats:italic>\u2009=\u20090.009) were independent predictors of MBC. Measured adolescent overweight and obesity are associated with increased risk of MBC, suggesting a modifiable risk factor potentially allowing for early intervention. The novel association with cognitive function should be further explored.<\/jats:p>","DOI":"10.1002\/ijc.31121","type":"journal-article","created":{"date-parts":[[2017,10,21]],"date-time":"2017-10-21T08:22:37Z","timestamp":1508574157000},"page":"910-918","source":"Crossref","is-referenced-by-count":20,"title":["Adolescent obesity and adult male breast cancer in a cohort of 1,382,093 men"],"prefix":"10.1002","volume":"142","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8092-0717","authenticated-orcid":false,"given":"Lital","family":"Keinan\u2010Boker","sequence":"first","affiliation":[{"name":"Israel National Cancer Registry, Israel Center for Disease Control, Ministry of Health, Gertner Institute, Sheba Medical Center Ramat\u2010Gan 52621 Israel"},{"name":"School of Public Health, University of Haifa, Abba Hushy Blvd. Haifa 31905 Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5597-4916","authenticated-orcid":false,"given":"Hagai","family":"Levine","sequence":"additional","affiliation":[{"name":"Hebrew University\u2010Hadassah School of Public Health &amp; Community Medicine, Ein Kerem Jerusalem Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Adi","family":"Leiba","sequence":"additional","affiliation":[{"name":"Surgeon General Headquarters, Medical Corps, Israeli Defense Forces  Ramat Gan, Israel"},{"name":"Sackler School of Medicine Tel Aviv University, Ramat Aviv Tel Aviv Israel"},{"name":"Harvard Medical School Cambridge MA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Estela","family":"Derazne","sequence":"additional","affiliation":[{"name":"Surgeon General Headquarters, Medical Corps, Israeli Defense Forces  Ramat Gan, Israel"},{"name":"Sackler School of Medicine Tel Aviv University, Ramat Aviv Tel Aviv Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jeremy D.","family":"Kark","sequence":"additional","affiliation":[{"name":"Hebrew University\u2010Hadassah School of Public Health &amp; Community Medicine, Ein Kerem Jerusalem Israel"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2017,11,3]]},"reference":[{"key":"e_1_2_5_2_1","doi-asserted-by":"publisher","DOI":"10.3322\/caac.21208"},{"key":"e_1_2_5_3_1","unstructured":"Israel National Cancer Registry website:http:\/\/www.health.gov.il\/UnitsOffice\/HD\/ICDC\/ICR\/CancerIncidence\/Pages\/about.aspx accessed May2017."},{"key":"e_1_2_5_4_1","unstructured":"Cancer Incidence in Five Continents Vol. X (electronic version). 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