Decline in Human Fertility Rates with Male Age: A Consequence of a Decrease in Male Fecundity with Aging?
Background: The objective of this study is to investigate the influence of male age on human fertility, defined as the birth rate for a given population. Methods: Data from the Spanish National Statistics Institute (INE) for the year 2004 from a total of 454,753 newborn infants and sorted by male an...
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| Veröffentlicht in: | Gynecologic and obstetric investigation 2011-01, Vol.71 (4), p.229-235 |
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| creator | Matorras, Roberto Matorras, Francisco Expósito, Antonia Martinez, Lorea Crisol, Lorena |
| description | Background: The objective of this study is to investigate the influence of male age on human fertility, defined as the birth rate for a given population. Methods: Data from the Spanish National Statistics Institute (INE) for the year 2004 from a total of 454,753 newborn infants and sorted by male and female age groups were evaluated. In order to correct the influence of female age-related fertility, a different analysis was performed considering only women under 30 years of age. Results: From a demographic point of view, male fertility started to decline at 35–39 years of age. This decline is constant and follows an exponential pattern (slope –0.11 to –0.12). The trend persisted when the data were adjusted for every 1,000 men in the age group, as well as when only women under the age of 30 were considered. Male fertility showed a 21–23% annual decrease starting at the age of 39. Conclusion: An exponential decrease in human fertility which is independent of the woman’s age was observed with male aging. This decay is probably due to a downfall in male fecundity, closely related to a decline in sperm quality. However, social or behavioral causes for this trend cannot be excluded. |
| doi_str_mv | 10.1159/000319236 |
| format | Article |
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Methods: Data from the Spanish National Statistics Institute (INE) for the year 2004 from a total of 454,753 newborn infants and sorted by male and female age groups were evaluated. In order to correct the influence of female age-related fertility, a different analysis was performed considering only women under 30 years of age. Results: From a demographic point of view, male fertility started to decline at 35–39 years of age. This decline is constant and follows an exponential pattern (slope –0.11 to –0.12). The trend persisted when the data were adjusted for every 1,000 men in the age group, as well as when only women under the age of 30 were considered. Male fertility showed a 21–23% annual decrease starting at the age of 39. Conclusion: An exponential decrease in human fertility which is independent of the woman’s age was observed with male aging. This decay is probably due to a downfall in male fecundity, closely related to a decline in sperm quality. However, social or behavioral causes for this trend cannot be excluded.</description><identifier>ISSN: 0378-7346</identifier><identifier>EISSN: 1423-002X</identifier><identifier>DOI: 10.1159/000319236</identifier><identifier>PMID: 21160151</identifier><identifier>CODEN: GOBIDS</identifier><language>eng</language><publisher>Basel, Switzerland: Karger</publisher><subject>Adult ; Aged ; Aging - physiology ; Biological and medical sciences ; Birth Rate ; Female ; Fertility - physiology ; Gynecology. Andrology. Obstetrics ; Humans ; Infant, Newborn ; Male ; Maternal Age ; Medical sciences ; Middle Aged ; Original Article ; Paternal Age ; Pregnancy ; Sex Factors ; Spain ; Spermatozoa - physiology</subject><ispartof>Gynecologic and obstetric investigation, 2011-01, Vol.71 (4), p.229-235</ispartof><rights>2010 S. Karger AG, Basel</rights><rights>2015 INIST-CNRS</rights><rights>Copyright © 2010 S. Karger AG, Basel.</rights><rights>Copyright (c) 2011 S. Karger AG, Basel</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c362t-f2829f2e53c6e614e42b3367e927bc4896f864fb881cab24adb3624c21e0fd0b3</citedby><cites>FETCH-LOGICAL-c362t-f2829f2e53c6e614e42b3367e927bc4896f864fb881cab24adb3624c21e0fd0b3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,2422,27903,27904</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=24303434$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/21160151$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Matorras, Roberto</creatorcontrib><creatorcontrib>Matorras, Francisco</creatorcontrib><creatorcontrib>Expósito, Antonia</creatorcontrib><creatorcontrib>Martinez, Lorea</creatorcontrib><creatorcontrib>Crisol, Lorena</creatorcontrib><title>Decline in Human Fertility Rates with Male Age: A Consequence of a Decrease in Male Fecundity with Aging?</title><title>Gynecologic and obstetric investigation</title><addtitle>Gynecol Obstet Invest</addtitle><description>Background: The objective of this study is to investigate the influence of male age on human fertility, defined as the birth rate for a given population. Methods: Data from the Spanish National Statistics Institute (INE) for the year 2004 from a total of 454,753 newborn infants and sorted by male and female age groups were evaluated. In order to correct the influence of female age-related fertility, a different analysis was performed considering only women under 30 years of age. Results: From a demographic point of view, male fertility started to decline at 35–39 years of age. This decline is constant and follows an exponential pattern (slope –0.11 to –0.12). The trend persisted when the data were adjusted for every 1,000 men in the age group, as well as when only women under the age of 30 were considered. Male fertility showed a 21–23% annual decrease starting at the age of 39. Conclusion: An exponential decrease in human fertility which is independent of the woman’s age was observed with male aging. This decay is probably due to a downfall in male fecundity, closely related to a decline in sperm quality. However, social or behavioral causes for this trend cannot be excluded.</description><subject>Adult</subject><subject>Aged</subject><subject>Aging - physiology</subject><subject>Biological and medical sciences</subject><subject>Birth Rate</subject><subject>Female</subject><subject>Fertility - physiology</subject><subject>Gynecology. Andrology. Obstetrics</subject><subject>Humans</subject><subject>Infant, Newborn</subject><subject>Male</subject><subject>Maternal Age</subject><subject>Medical sciences</subject><subject>Middle Aged</subject><subject>Original Article</subject><subject>Paternal Age</subject><subject>Pregnancy</subject><subject>Sex Factors</subject><subject>Spain</subject><subject>Spermatozoa - physiology</subject><issn>0378-7346</issn><issn>1423-002X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><sourceid>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><recordid>eNpd0M1LwzAYBvAgis7pwbtIEEQ8VPNlmnqRMZ0KiiAK3kqavZnRLtWkRfzvjducIDmEwO998vIgtEPJMaWnxQkhhNOCcbmCelQwnhHCnldRj_BcZTkXcgNtxvhKSMJKrKMNRqlMD9pD7gJM7Txg5_F1N9UejyC0rnbtF37QLUT86doXfKdrwIMJnOEBHjY-wkcH3gBuLNY4RQTQcZYxgyMwnR__RMyGBxPnJ-dbaM3qOsL24u6jp9Hl4_A6u72_uhkObjPDJWszyxQrLINTbiRIKkCwinOZQ8HyyghVSKuksJVS1OiKCT2u0pwwjAKxY1LxPjqc576HJm0Z23LqooG61h6aLpYqZ4LnghZJ7v-Tr00XfFouIUkUZZIndDRHJjQxBrDle3BTHb5KSsqf9stl-8nuLQK7agrjpfytO4GDBdDR6NoG7Y2Lf05wwkU6fbQ7d286TCAsweKfb9h6klg</recordid><startdate>20110101</startdate><enddate>20110101</enddate><creator>Matorras, Roberto</creator><creator>Matorras, Francisco</creator><creator>Expósito, Antonia</creator><creator>Martinez, Lorea</creator><creator>Crisol, Lorena</creator><general>Karger</general><general>S. 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Andrology. Obstetrics</topic><topic>Humans</topic><topic>Infant, Newborn</topic><topic>Male</topic><topic>Maternal Age</topic><topic>Medical sciences</topic><topic>Middle Aged</topic><topic>Original Article</topic><topic>Paternal Age</topic><topic>Pregnancy</topic><topic>Sex Factors</topic><topic>Spain</topic><topic>Spermatozoa - physiology</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Matorras, Roberto</creatorcontrib><creatorcontrib>Matorras, Francisco</creatorcontrib><creatorcontrib>Expósito, Antonia</creatorcontrib><creatorcontrib>Martinez, Lorea</creatorcontrib><creatorcontrib>Crisol, Lorena</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>ProQuest Central (Corporate)</collection><collection>Biotechnology Research Abstracts</collection><collection>Health & Medical Collection</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Medical Database (Alumni Edition)</collection><collection>ProQuest Pharma Collection</collection><collection>Technology Research Database</collection><collection>Hospital Premium Collection</collection><collection>Hospital Premium Collection (Alumni Edition)</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest Central UK/Ireland</collection><collection>ProQuest Central</collection><collection>ProQuest One Community College</collection><collection>Engineering Research Database</collection><collection>Health Research Premium Collection</collection><collection>Health Research Premium Collection (Alumni)</collection><collection>ProQuest Health & Medical Complete (Alumni)</collection><collection>Health & Medical Collection (Alumni Edition)</collection><collection>Medical Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>ProQuest Central China</collection><collection>MEDLINE - Academic</collection><jtitle>Gynecologic and obstetric investigation</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Matorras, Roberto</au><au>Matorras, Francisco</au><au>Expósito, Antonia</au><au>Martinez, Lorea</au><au>Crisol, Lorena</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Decline in Human Fertility Rates with Male Age: A Consequence of a Decrease in Male Fecundity with Aging?</atitle><jtitle>Gynecologic and obstetric investigation</jtitle><addtitle>Gynecol Obstet Invest</addtitle><date>2011-01-01</date><risdate>2011</risdate><volume>71</volume><issue>4</issue><spage>229</spage><epage>235</epage><pages>229-235</pages><issn>0378-7346</issn><eissn>1423-002X</eissn><coden>GOBIDS</coden><abstract>Background: The objective of this study is to investigate the influence of male age on human fertility, defined as the birth rate for a given population. Methods: Data from the Spanish National Statistics Institute (INE) for the year 2004 from a total of 454,753 newborn infants and sorted by male and female age groups were evaluated. In order to correct the influence of female age-related fertility, a different analysis was performed considering only women under 30 years of age. Results: From a demographic point of view, male fertility started to decline at 35–39 years of age. This decline is constant and follows an exponential pattern (slope –0.11 to –0.12). The trend persisted when the data were adjusted for every 1,000 men in the age group, as well as when only women under the age of 30 were considered. Male fertility showed a 21–23% annual decrease starting at the age of 39. Conclusion: An exponential decrease in human fertility which is independent of the woman’s age was observed with male aging. This decay is probably due to a downfall in male fecundity, closely related to a decline in sperm quality. However, social or behavioral causes for this trend cannot be excluded.</abstract><cop>Basel, Switzerland</cop><pub>Karger</pub><pmid>21160151</pmid><doi>10.1159/000319236</doi><tpages>7</tpages></addata></record> |
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| ispartof | Gynecologic and obstetric investigation, 2011-01, Vol.71 (4), p.229-235 |
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| source | MEDLINE; Karger Journals; Alma/SFX Local Collection |
| subjects | Adult Aged Aging - physiology Biological and medical sciences Birth Rate Female Fertility - physiology Gynecology. Andrology. Obstetrics Humans Infant, Newborn Male Maternal Age Medical sciences Middle Aged Original Article Paternal Age Pregnancy Sex Factors Spain Spermatozoa - physiology |
| title | Decline in Human Fertility Rates with Male Age: A Consequence of a Decrease in Male Fecundity with Aging? |
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