27:
324:
Researchers have found evidence to suggest overweight and obesity may cause subtle damage to sperm and prevent healthy pregnancy. They say fertilization was 40% less likely to succeed when the father was overweight.
287:
declines with age, with men aged 50–80 years producing sperm at an average rate of 75% compared with men aged 20–50 years. However, an even larger difference is seen in how many of the
105:
Older men have lower semen parameters resulting in lower fertility potential. The effects of aging on semen quality are summarized below based on a study of 1,219 subjects:
809:
494:
510:"Impact of age on semen parameters in male partners of infertile couples in a rural tertiary care center of central India: A cross-sectional study"
98:, and sperm morphology. In studies that controlled for female age, comparisons between men under 30 and men over 50 found relative decreases in
61:, sturdiness, and constitution, especially in the fathering of children. In this last sense, virility is to men as fertility is to women.
744:
313:
study found that the children of men who were 40 or older were 5.75 times more likely than children of men under 30 to have an
65:
has become obsolete in referring to a "nubile" young woman, or "a maid that is
Marriageable or ripe for a Husband, or Virill".
57:
characteristics viewed positively. Virile means "marked by strength or force". Virility is commonly associated with vigour,
30:
Historically, masculine attributes such as beard growth have been seen as signs of virility and leadership (for example, in
329:
437:
424:
823:
606:
509:
803:
488:
863:
766:
Plas, E., Berger, P., Hermann, M., Pflüger, H. (August 2000). "Effects of aging on male fertility?".
288:
386:
318:
89:
858:
791:
309:
Research shows increased risks for health problems for children of older fathers. A large-scale
783:
726:
677:
628:
587:
567:
531:
476:
369:
775:
716:
708:
667:
659:
618:
579:
521:
466:
333:
26:
721:
696:
526:
337:
99:
95:
779:
672:
647:
471:
454:
354:
305:
In males 80 years old and older, 10% of the seminiferous tubules contain mature sperm.
852:
94:
Evidence shows that increased male age is associated with a decline in semen volume,
73:
31:
795:
549:
374:
663:
455:"Effects of male age on semen quality and fertility: a review of the literature"
364:
284:
54:
583:
302:
In males 40–69 years old, 50% of the seminiferous tubules contain mature sperm.
299:
In males 20–39 years old, 90% of the seminiferous tubules contain mature sperm.
623:
508:
Kumar, M.D., Naina; Singh, M.D., Amit; Choudhari, M.D., Ajay R (August 2017).
349:
20:
787:
730:
681:
632:
591:
535:
480:
72:
growth have been seen as signs of virility and leadership (for example in
697:"Paternal Age and Sporadic Schizophrenia: Evidence for De Novo Mutations"
359:
317:, controlling for year of birth, socioeconomic status, and maternal age.
332:
recommends an age limit for sperm donors of 50 years or less, and many
712:
380:
314:
310:
292:
77:
58:
35:
566:
Reichenberg, A., Gross R., Weiser M., et al. (September 2006).
69:
648:"Paternal age and schizophrenia: a population based cohort study"
646:
Sipos A, Rasmussen F, Harrison G, et al. (November 2004).
605:
Malaspina, D.; Harlap S.; Fennig S.; et al. (April 2001).
340:
will not accept donations from men over 40 or 45 years of age.
321:
has also been correlated to schizophrenia in numerous studies.
695:
Malaspina D, Corcoran C, Fahim C., et al. (April 2002).
453:
Kidd, S. A., Eskenazi, B., Wyrobek, A. J. (February 2001).
556:. Volume, Number 3, August 1991. Sherman J. Silber, M.D.
607:"Advancing paternal age and the risk of schizophrenia"
514:International Journal of Reproductive Biomedicine
745:"Obesity | Fat men linked to low fertility"
16:Traits of masculinity viewed in a positive light
824:Age Limit of Sperm Donors in the United Kingdom
8:
808:: CS1 maint: multiple names: authors list (
493:: CS1 maint: multiple names: authors list (
412:
68:Historically, masculine attributes such as
107:
49:, manhood or virility, derived from Latin
720:
671:
622:
525:
470:
747:. Sydney Morning Herald. 18 October 2010
408:
406:
53:, man) refers to any of a wide range of
25:
402:
801:
554:Seminars in Reproductive Endocrinology
486:
448:
446:
131:Motility (grades a + b) (%)
844:, Boston, Massachusetts: Beacon Press
7:
568:"Advancing paternal age and autism"
14:
19:For the pathogenicity term, see
550:Effect of Age on Male Fertility
1:
780:10.1016/S0531-5565(00)00120-0
472:10.1016/S0015-0282(00)01679-4
392:(Sanskrit term for the same)
126:Total Sperm count (million)
840:Schiebinger, Londa (1993),
664:10.1136/bmj.38243.672396.55
880:
584:10.1001/archpsyc.63.9.1026
330:American Fertility Society
87:
18:
624:10.1001/archpsyc.58.4.361
438:Oxford English Dictionary
425:Oxford English Dictionary
768:Experimental Gerontology
315:autism spectrum disorder
319:Increased paternal age
295:contain mature sperm:
39:
611:Arch. Gen. Psychiatry
572:Arch. Gen. Psychiatry
102:between 23% and 38%.
29:
289:seminiferous tubules
114:Number of subjects (
90:Paternal age effect
111:Age group (years)
40:
713:10.1002/ajmg.1701
701:Am. J. Med. Genet
370:Physical strength
334:fertility clinics
282:
281:
871:
845:
827:
820:
814:
813:
807:
799:
763:
757:
756:
754:
752:
741:
735:
734:
724:
692:
686:
685:
675:
643:
637:
636:
626:
602:
596:
595:
563:
557:
546:
540:
539:
529:
505:
499:
498:
492:
484:
474:
450:
441:
434:
428:
421:
415:
413:Schiebinger 1993
410:
108:
45:(from the Latin
879:
878:
874:
873:
872:
870:
869:
868:
849:
848:
839:
836:
834:Further reading
831:
830:
821:
817:
800:
765:
764:
760:
750:
748:
743:
742:
738:
694:
693:
689:
645:
644:
640:
604:
603:
599:
565:
564:
560:
547:
543:
507:
506:
502:
485:
452:
451:
444:
435:
431:
422:
418:
411:
404:
399:
346:
136:Morphology (%)
100:pregnancy rates
92:
86:
24:
17:
12:
11:
5:
877:
875:
867:
866:
861:
851:
850:
847:
846:
835:
832:
829:
828:
815:
758:
736:
707:(3): 299–303.
687:
658:(7474): 1070.
638:
597:
578:(9): 1026–32.
558:
541:
520:(8): 497–502.
500:
459:Fertil. Steril
442:
429:
416:
401:
400:
398:
395:
394:
393:
384:
377:
372:
367:
362:
357:
352:
345:
342:
338:United Kingdom
307:
306:
303:
300:
280:
279:
274:
269:
264:
259:
256:
252:
251:
246:
241:
236:
231:
228:
224:
223:
218:
213:
208:
203:
200:
196:
195:
190:
185:
180:
175:
172:
168:
167:
162:
157:
152:
147:
144:
140:
139:
134:
129:
124:
119:
112:
96:sperm motility
85:
82:
15:
13:
10:
9:
6:
4:
3:
2:
876:
865:
862:
860:
857:
856:
854:
843:
842:Nature's Body
838:
837:
833:
825:
819:
816:
811:
805:
797:
793:
789:
785:
781:
777:
774:(5): 543–51.
773:
769:
762:
759:
746:
740:
737:
732:
728:
723:
718:
714:
710:
706:
702:
698:
691:
688:
683:
679:
674:
669:
665:
661:
657:
653:
649:
642:
639:
634:
630:
625:
620:
616:
612:
608:
601:
598:
593:
589:
585:
581:
577:
573:
569:
562:
559:
555:
551:
545:
542:
537:
533:
528:
523:
519:
515:
511:
504:
501:
496:
490:
482:
478:
473:
468:
465:(2): 237–48.
464:
460:
456:
449:
447:
443:
440:
439:
433:
430:
427:
426:
420:
417:
414:
409:
407:
403:
396:
391:
389:
385:
383:
382:
378:
376:
373:
371:
368:
366:
363:
361:
358:
356:
353:
351:
348:
347:
343:
341:
339:
335:
331:
326:
322:
320:
316:
312:
304:
301:
298:
297:
296:
294:
290:
286:
278:
275:
273:
270:
268:
265:
263:
260:
257:
254:
253:
250:
247:
245:
242:
240:
237:
235:
232:
229:
226:
225:
222:
219:
217:
214:
212:
209:
207:
204:
201:
198:
197:
194:
191:
189:
186:
184:
181:
179:
176:
173:
170:
169:
166:
163:
161:
158:
156:
153:
151:
148:
145:
142:
141:
138:
135:
133:
130:
128:
125:
123:
120:
117:
113:
110:
109:
106:
103:
101:
97:
91:
84:Male virility
83:
81:
79:
75:
74:ancient Egypt
71:
66:
64:
60:
56:
52:
48:
44:
37:
33:
32:ancient Egypt
28:
22:
841:
818:
804:cite journal
771:
767:
761:
749:. Retrieved
739:
704:
700:
690:
655:
651:
641:
617:(4): 361–7.
614:
610:
600:
575:
571:
561:
553:
544:
517:
513:
503:
489:cite journal
462:
458:
436:
432:
423:
419:
387:
379:
375:Virilization
327:
323:
308:
283:
277:
272:
267:
262:
249:
244:
239:
238:112.3±142.7
234:
221:
216:
211:
210:120.4±156.7
206:
193:
188:
183:
182:149.5±173.7
178:
165:
160:
155:
154:144.3±138.0
150:
137:
132:
127:
122:
121:Volume (ml)
115:
104:
93:
67:
62:
50:
46:
42:
41:
864:Masculinity
826:", PDF file
365:Masculinity
285:Sperm count
853:Categories
751:19 October
397:References
390:(Hinduism)
355:Muliebrity
276:19.7±14.5
271:31.3±23.9
266:61.0±91.1
248:23.0±16.5
243:33.1±25.1
220:23.1±15.9
215:40.0±27.1
192:24.8±15.7
187:48.1±30.4
164:26.1±13.3
159:47.5±25.4
88:See also:
859:Fertility
350:Fertility
55:masculine
47:virilitas
21:Virulence
796:19875208
788:10978677
731:11920852
682:15501901
633:11296097
592:16953005
536:29082368
481:11172821
360:Machismo
344:See also
261:1.7±1.1
233:2.4±1.4
205:2.5±1.5
177:2.7±1.5
149:2.9±1.3
43:Virility
722:2982144
527:5653911
336:in the
311:Israeli
291:in the
794:
786:
729:
719:
680:
673:526116
670:
631:
590:
534:
524:
479:
381:Virtus
293:testes
255:50–60
227:43–49
199:36–42
171:29–35
143:21–28
78:Greece
63:Virile
59:health
36:Greece
792:S2CID
388:Vīrya
70:beard
810:link
784:PMID
753:2010
727:PMID
678:PMID
629:PMID
588:PMID
532:PMID
495:link
477:PMID
328:The
230:165
202:532
174:450
76:and
34:and
776:doi
717:PMC
709:doi
705:114
668:PMC
660:doi
656:329
652:BMJ
619:doi
580:doi
522:PMC
467:doi
258:15
146:57
80:).
51:vir
855::
806:}}
802:{{
790:.
782:.
772:35
770:.
725:.
715:.
703:.
699:.
676:.
666:.
654:.
650:.
627:.
615:58
613:.
609:.
586:.
576:63
574:.
570:.
552:"
548:"
530:.
518:15
516:.
512:.
491:}}
487:{{
475:.
463:75
461:.
457:.
445:^
405:^
118:)
38:).
822:"
812:)
798:.
778::
755:.
733:.
711::
684:.
662::
635:.
621::
594:.
582::
538:.
497:)
483:.
469::
116:n
23:.
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
