TV2.dk, Anders Hjort og Maiken Brusgaard Christensen, 01.04.2018: http://nyheder.tv2.dk/samfund/2018-04-01-hver-fjerde-mandhar-nedsat-saedkvalitet-men-mange-ved-det-ikke-?cid=tv2.dk: Hver%20fjerde%20mand%20har%20nedsat%20sædkvalitet%20–%20men%20mange%20ved%20det%20ikke: article

Human Reproduction, E. Carlsen mfl, 18.10.2003: https://www.ncbi.nlm.nih.gov/pubmed/14507826

Dagens Medisin, Lisbeth Nilsen, 08.09.2018: https://www.dagensmedisin.no/artikler/2018/08/09/bedre-sadkvalitet-hos-mennsom-bruker-boxer-shorts/ og Human Reproduction, Audrey J. Gaskins mfl, 01.09.2018: https://academic.oup.com/humrep/article-abstract/33/9/ 1749/5066758?redirectedFrom=fulltext

Norsk Helseinformatikk, Marthe Lein, 15.03.2013: https://nhi. no/familie/seksualitet-og-prevensjon/sadkvalitetbest-om-vinteren/ og American Journal of Obstetrics and Gynecology, Eliahu Levitas mfl, mai 2013: https://www.sciencedirect.com/science/article/pii/S0002937813001464

Kan sykling gi dårligere sædkvalitet? Aktiv Trening, 20.05.2013: https://aktivtrening.com/trening/landeveissykling/kan-syklinggi-darligere-sadkvalitet

VG, Bodil Fagerheim, 30.06.2009: https://www.vg.no/forbruker/helse/i/pz4Gj/elitesyklister-boer-fryse-ned-saed

The Independent, Mythili Sampathkumar, 14.12.2018: https://www.independent.co.uk/news/science/sperm-countheat-temperature-climate-change-global-warming-study-a8634006.html og USA Today, Doyle Rice, 13.11.2018: https://eu.usatoday.com/story/tech/science/2018/11/13/climate-change-could-damage-sperm-and-thus-malefertility/1990220002/ og Nature Communications, Kris Sales mfl, Nr. 9, 2018: https://www.nature.com/articles/s41467-018-07273-z

The Conversation, Alan Barreca mfl, 24.11.2015: http://theconversation.com/climate-changes-hotter-weather-could-reduce-human-fertility-50273

MedicalXpress, David Colgan, 06.07.2018: https://medicalxpress.com/news/2018-07-temperatures-negative-effect-fertility-birth.html

Гиподинамия

The Lancet, Regina Guthold mfl, 04.09.2018: https://www.thelancet.com/journals/langlo/article/PIIS2214-109X(18)-30357-7/fulltext#seccestitle130

Aftenposten, Malene Indrebø-Langlo, 12.10.2018: https://www.aftenposten.no/100Sport/sprek/Kun-tre-av-ti-voksne-nordmenn-er-aktive-nok—Det-er-blitt-et-folkehelseproblem-262371b.html

Aftenposten, Olav Thorstad, 13.09.2017: https://www.aftenposten.no/meninger/debatt/i/j4n40/Nordmenn-er-Nordens-slappeste-Hva-kan-gjores—Olav-Thorstad

forskning.no, Ingrid Spilde, 17.12.2015: https://forskning.no/samfunnsmedisin-trening/nordmenn-mindre-aktiveenn-andre-skandinaver/451148

NRK, Cathrine Einan, 05.02.2013: https://www.nrk.no/livsstil/mye-tv-titting-gir-darligere-saed-1.10898810

American Journal of Epidemiology, Lærke Priskorn mfl, 25.08.2015: https://www.ncbi.nlm.nih.gov/pubmed/27501721

Cytokine, Behzad Hajizadeh Maleki og Bakhtyar Tartibian, april 2017: https://www.sciencedirect.com/science/article/abs/pii/S1043466617300078

International Journal of Fertility & Sterility, Paula C Lalinde-Acevedo mfl, oktober-desember 2017: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5582143/#B33

American Journal of Men’s Health, Pawel Józków og Marco Rossato, mai 2017: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5675222/

Недостаток сна

JAMA, Rachel Leproult og Eve Van Cauter, juni 2011: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4445839/

Vi sover minst i Norden,VG, 20.03.2009: https://www.vg.no/forbruker/helse/i/WQozj/vi-sover-minst-i-norden

Aftenposten, Frøydis Braathen, 24.06.2011: https://www.aftenposten.no/norge/i/b5Azq/Halvparten-avbross-sover-for-lite

American journal of epidemiology, T.K. Jensen mfl, mai 2013: https://academic.oup.com/aje/article/177/10/1027/101677

Medical Science Monitor, Mei-Mei Liu mfl, april 2016: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5402839/

Science Daily,Wiley, 16.10.2017: https://www.sciencedaily.com/releases/2017/10/171016083201.htm og Sleep and aging, XiaogangWang, 09.10.2017: https://onlinelibrary.wiley.com/doi/abs/10.1111/jsr.12615

Psychology Today, Melissa Burkley, 10.06.2018: https://www.psychologytoday.com/us/blog/the-social-thinker/201906/sleep-deprivation-may-shrink-mens-testicles og Fertility and Sterility, Lauren Anne Wise mfl, mars 2018: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5868973/

Are Poor Sleep Habits Lowering Your Sperm? DCYB, 24.09.2018: https://dontcookyourballs.com/poor-sleep-habitslowering-your-sperm-count/ og Shift Work Found to Negatively Affet a Man’s Sex Life and Sperm Quality, Chronobiology, 24.05.2017: https://www.chronobiology.com/shift-work-found-negatively-affect-mans-sex-life-sperm-quality/

Sleep Deprivation – A Global Epicemic, MedSleep, 25.04.2017: https://medsleep.com/sleep-deprivation-global-epidemic/

Thrive Global, Rebecca Muller, 22.08.2018: https://thriveglobal.com/stories/sleep-epidemic-research/

Aftenposten, Hanne Christensen, 16.03.2018: https://www.aftenposten.no/familieogoppvekst/n-av-tre-sliter-med-sovnen-Ligner-dine-vaner-resten-av-befolkningens-11744b.html

Стресс

Fertility and Sterility, K.L. Harrison mfl, oktober 1987: https://www.ncbi.nlm.nih.gov/pubmed/3653421

Acta Europaea Fertilitatis, G. Ragni og A. Caccamo, januar/februar 1992: https://www.ncbi.nlm.nih.gov/pubmed/1293895

Reuters, Andrew M. Seaman, 20.02.2013: https://www.reuters.com/article/us-sperm-quality/stress-and-anxiety-linked-to-spermquality-idUSBRE91J17320130220

Fertility and Sterility, Teresa Janevic mfl, august 2014: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4382866/

Fertility and Sterility, P.L. Bigelow, januar 1998: https://www.ncbi.nlm.nih.gov/pubmed/9457925

MedicalXpress, Ben Gurion University of the Negev, 07.06.2018: https://medicalxpress.com/news/2018-06-prolonged-stressimpact-quality-sperm.html

South China Morning Post, Anthea Rowan, 17.06.2018: https://www.scmp.com/lifestyle/health-wellness/article/2151037/how-increase-your-sperm-count-and-keep-it-lots-great-sex

Scientific American, Esther Landhuis, 08.11.2018: https://www.scientificamerican.com/article/how-dads-stressesget-passed-along-to-offspring/

The Jakarta Post, Marlowe Hood, 31.05.2019: https://www.thejakartapost.com/life/2019/05/30/stressed-pregnant-moms-maymean-lower-sperm-counts-study.html

Tidsskrift for Den norske legeforening, Rune Blomhoff, 17.06.2004: https://tidsskriftet.no/2004/06/tema-ernaering/antioksidanter-og-oksidativt-stress

Daily Mail, Rob Hobson, og Sarah Brewer, 05.04.2019: https://www.dailymail.co.uk/health/article-6888377/The-MALE-fertilitydiet-two-medical-nutritionists.html