Sperm crisis: what crisis?

doi:10.1038/aja.2012.90

Review

. 2013 Mar;15(2):184-6.

doi: 10.1038/aja.2012.90. Epub 2012 Sep 24.

Sperm crisis: what crisis?

Eberhard Nieschlag¹, Alexander Lerchl

Affiliations

PMID: 23001441
PMCID: PMC3739166
DOI: 10.1038/aja.2012.90

Review

Sperm crisis: what crisis?

Eberhard Nieschlag et al. Asian J Androl. 2013 Mar.

. 2013 Mar;15(2):184-6.

doi: 10.1038/aja.2012.90. Epub 2012 Sep 24.

Authors

Eberhard Nieschlag¹, Alexander Lerchl

Affiliation

¹ Centre of Reproductive Medicine and Andrology, University of Münster, Münster, Germany. Eberhard.Nieschlag@ukmuenster.de

PMID: 23001441
PMCID: PMC3739166
DOI: 10.1038/aja.2012.90

No abstract available

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Figures

**Figure 1**
Dependence of abstinence time and testicular volume on total sperm counts. Reproduced with permission from Cooper.

**Figure 2**
Original (a) and corrected (b) presentation of data from the Carlsen study. Reproduced with permission from *British Medical Journal* (BMJ).

**Figure 3**
Mean sperm concentration of 5000 Danish draftees from 1996 to 2010 (16%–30% of all Danish draftees, i.e., 300 men per year, 18 years old).

See this image and copyright information in PMC

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References

1. Carlsen E, Giwercman A, Keiding N, Skakkebaek NE. Evidence for decreasing quality of semen during past 50 years. BMJ. 1992;305:609–13. - PMC - PubMed
1. Lerchl A. Evidence for decreasing quality of sperm. Presentation of data on sperm concentration was flawed. BMJ. 1995;311:569–70. - PMC - PubMed
1. Lerchl A, Nieschlag E. Decreasing sperm counts? A critical (re)view. Exp Clin Endocrinol Diabetes. 1996;104:301–7. - PubMed
1. Lerchl A, Nieschlag E. Declining sperm counts in European men—fact or fiction. Andrologia. 1996;28:305–6. - PubMed
1. Fisch H. Declining worldwide sperm counts: disproving a myth. Urol Clin North Am. 2008;35:137–46. - PubMed

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[1] Carlsen E, Giwercman A, Keiding N, Skakkebaek NE. Evidence for decreasing quality of semen during past 50 years. BMJ. 1992;305:609–13. - PMC - PubMed

[2] Carlsen E, Giwercman A, Keiding N, Skakkebaek NE. Evidence for decreasing quality of semen during past 50 years. BMJ. 1992;305:609–13. - PMC - PubMed

[3] Lerchl A. Evidence for decreasing quality of sperm. Presentation of data on sperm concentration was flawed. BMJ. 1995;311:569–70. - PMC - PubMed

[4] Lerchl A. Evidence for decreasing quality of sperm. Presentation of data on sperm concentration was flawed. BMJ. 1995;311:569–70. - PMC - PubMed

[5] Lerchl A, Nieschlag E. Decreasing sperm counts? A critical (re)view. Exp Clin Endocrinol Diabetes. 1996;104:301–7. - PubMed

[6] Lerchl A, Nieschlag E. Decreasing sperm counts? A critical (re)view. Exp Clin Endocrinol Diabetes. 1996;104:301–7. - PubMed

[7] Lerchl A, Nieschlag E. Declining sperm counts in European men—fact or fiction. Andrologia. 1996;28:305–6. - PubMed

[8] Lerchl A, Nieschlag E. Declining sperm counts in European men—fact or fiction. Andrologia. 1996;28:305–6. - PubMed

[9] Fisch H. Declining worldwide sperm counts: disproving a myth. Urol Clin North Am. 2008;35:137–46. - PubMed

[10] Fisch H. Declining worldwide sperm counts: disproving a myth. Urol Clin North Am. 2008;35:137–46. - PubMed

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Sperm crisis: what crisis?

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Sperm crisis: what crisis?

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