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The literature is not consistent and adequate for recommendations to the increasing number of women and men of reproductive age who ask for lifestyle guidance. Therefore, the aims of the Food &amp; Fertility Study will be to investigate the possible association between food intake and semen quality in men, and pregnancy and live birth rates in women undergoing intrauterine insemination or assisted reproductive technology treatment.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods and analysis<\/jats:title>\n                    <jats:p>The Food &amp; Fertility Study is a multicentre prospective cohort study which plans to enrol a total of 4000\u2009women and men between 2022 and 2024. Data collection will take place in four fertility clinics through a web-based Food Frequency Questionnaire. Data on sperm quality and pregnancy and live birth rates will be obtained from medical records and national registers.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Ethics and dissemination<\/jats:title>\n                    <jats:p>The study is registered with and approved by the Danish Data Protection Agency, the North Denmark Region (j.nr: 2019-055298). Further, a Statement of Work and a Master Collaboration Agreement have been submitted and approved by the regional legal departments (AGR-2019-731-9667). Dissemination of the results will be through national and international conferences, in scientific environments, in the form of lectures to the broader public, and by peer-reviewed publications in international scientific journals.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>\n                      <jats:ext-link xmlns:xlink=\"http:\/\/www.w3.org\/1999\/xlink\" ext-link-type=\"clintrialgov\" xlink:href=\"NCT05454046\">NCT05454046<\/jats:ext-link>\n                      .\n                    <\/jats:p>\n                  <\/jats:sec>","DOI":"10.1136\/bmjopen-2022-068354","type":"journal-article","created":{"date-parts":[[2023,7,5]],"date-time":"2023-07-05T00:24:10Z","timestamp":1688516650000},"page":"e068354","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":0,"title":["Food &amp; Fertility Study: study protocol for a Danish multicentre prospective cohort study investigating the association between food intake and semen quality, pregnancy and birth outcomes in infertile women and men"],"prefix":"10.1136","volume":"13","clinical-trial-number":[{"clinical-trial-number":"nct05454046","registry":"10.18810\/clinical-trials-gov"}],"author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-9302-3548","authenticated-orcid":false,"given":"Maria Buhl","family":"Borgstr\u00f8m","sequence":"first","affiliation":[{"name":"The Fertility Clinic, Herlev Hospital, Herlev, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0628-5292","authenticated-orcid":false,"given":"Anne","family":"Ahrendt Bjerregaard","sequence":"additional","affiliation":[{"name":"Section of Epidemiology, Frederiksberg Hospital Center for Klinisk Forskning og Forebyggelse, Frederiksberg, Denmark"},{"name":"Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sjurdur F","family":"Olsen","sequence":"additional","affiliation":[{"name":"Department of Epidemiology Research, Statens Serum Institut, Copenhagen, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anette","family":"Gabrielsen","sequence":"additional","affiliation":[{"name":"The Fertility Clinic, Regional Hospital Horsens, Horsens, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Peter","family":"Humaidan","sequence":"additional","affiliation":[{"name":"The Fertility Clinic, Skive Regional Hospital, Skive, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ulrik Schi\u00f8ler","family":"Kesmodel","sequence":"additional","affiliation":[{"name":"Department of Clinical Medicine, Aalborg University, Aalborg, Denmark"},{"name":"The Fertility Unit, Aalborg University Hospital, Aalborg, Denmark"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[2023,7,4]]},"reference":[{"key":"2025121603412054000_13.7.e068354.1","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2017.08.010"},{"key":"2025121603412054000_13.7.e068354.2","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0000000000000477"},{"key":"2025121603412054000_13.7.e068354.3","doi-asserted-by":"publisher","DOI":"10.3945\/ajcn.115.112185"},{"key":"2025121603412054000_13.7.e068354.4","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/dex326"},{"key":"2025121603412054000_13.7.e068354.5","article-title":"Antioxidants for female subfertility (review)","volume":"8","author":"Showell","year":"2020","journal-title":"Cochrane Database Syst Rev"},{"key":"2025121603412054000_13.7.e068354.6","article-title":"Antioxidants for male subfertility (review)","volume":"3","author":"Smits","year":"2019","journal-title":"Cochrane Database Syst Rev"},{"key":"2025121603412054000_13.7.e068354.7","doi-asserted-by":"publisher","DOI":"10.1093\/humrep\/dem046"},{"key":"2025121603412054000_13.7.e068354.8","unstructured":"WHO . 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