{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T18:14:14Z","timestamp":1783707254042,"version":"3.55.0"},"reference-count":92,"publisher":"Public Library of Science (PLoS)","issue":"7","license":[{"start":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T00:00:00Z","timestamp":1783641600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS One"],"abstract":"<jats:sec id=\"sec001\">\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>Across many countries, paternal age at childbirth is rising, increasing exposure to age-related fertility decline. This study evaluated fertility-related knowledge, attitudes, and perceptions among young men.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec002\">\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>An anonymous cross-sectional survey was distributed via social media between 13\/02\/2025 and 29\/09\/2025. UK adult males completed 54 close-ended questions covering participant characteristics, fertility knowledge, reproductive aspirations, and personal\/socioeconomic influences.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec003\">\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>A total of 408 men participated in the survey, of whom 214 (52.5%) completed all components, with a median age of 34 years (interquartile range 31\u201338). Most were married (61.5%; N\u2009=\u2009176), had degree-level education or higher (78.4%; N\u2009=\u2009226), and were in full-time employment (85.4%; N\u2009=\u2009246). Over half had no children (55.6%; N\u2009=\u2009160). Most wished to have their first child between 30\u201335 years (64.5%; N\u2009=\u200971), and last between 36\u201340 years (64.3%; N\u2009=\u2009119).<\/jats:p>\n                    <jats:p>More than half of the participants recognised that paternal age affects fertility (58.6%; N\u2009=\u2009133). However, few were aware of the contribution of male-factor infertility (16.9%; N\u2009=\u200938), or the age at which semen quality declines (17.7%; N\u2009=\u200940). The majority understood that modifiable lifestyle factors influence semen quality (88.9%; N\u2009=\u2009200), and either agreed or strongly agreed that smoking (99.1%; N\u2009=\u2009211), recreational drug use (95.3%; N\u2009=\u2009203), and radiation\/chemical exposure (98.1%; N\u2009=\u2009209) impacted male fertility.<\/jats:p>\n                    <jats:p>Many men (43.2%; N\u2009=\u200992) had never sought fertility information; among those who did, online medical websites were most common (32.9%; N\u2009=\u200970), while social media was rarely used (1.4%; N\u2009=\u20093). Key considerations influencing reproductive plans included biological parenthood (76.5%; N\u2009=\u2009160), partner suitability (94.7%; N\u2009=\u2009196), financial security (95.2%; N\u2009=\u2009197), and suitable housing (72.4%; N\u2009=\u2009150).<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec004\">\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Young men demonstrated limited awareness of age-related fertility decline despite recognising lifestyle effects. Routine healthcare offers an opportunity for counselling to improve awareness, alongside consideration of socioeconomic factors. Findings are limited by a small, highly educated sample and possible self-selection bias.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec id=\"sec005\">\n                    <jats:title>Trial registration number<\/jats:title>\n                    <jats:p>Imperial College Research Ethics Committee number: 700608.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1371\/journal.pone.0353073","type":"journal-article","created":{"date-parts":[[2026,7,10]],"date-time":"2026-07-10T17:33:16Z","timestamp":1783704796000},"page":"e0353073","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":0,"title":["Exploring the knowledge, attitudes, and perceptions of young men towards fertility in the UK: A cross-sectional survey"],"prefix":"10.1371","volume":"21","author":[{"ORCID":"https:\/\/orcid.org\/0009-0003-1989-039X","authenticated-orcid":true,"given":"Jack","family":"Tighe","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0007-0473-158X","authenticated-orcid":true,"given":"Emeka","family":"Okorocha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anita","family":"Mitra","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0009-1519-3021","authenticated-orcid":true,"given":"Nicholas","family":"Anson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Benjamin P.","family":"Jones","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rachel","family":"Roberts","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Muna","family":"Elshieikh","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Efstathios","family":"Theodorou","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jara","family":"Ben Nagi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1752-5220","authenticated-orcid":true,"given":"Lorraine S.","family":"Kasaven","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"340","published-online":{"date-parts":[[2026,7,10]]},"reference":[{"issue":"4","key":"pone.0353073.ref001","article-title":"Infertility prevalence and the methods of estimation from 1990 to 2021: a systematic review and meta-analysis","volume":"2022","author":"CM Cox","year":"2022","journal-title":"Hum Reprod Open"},{"key":"pone.0353073.ref002","unstructured":"WHO. 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