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Table 2 Effect of paternal age on different sperm parameters

From: Effects of increased paternal age on sperm quality, reproductive outcome and associated epigenetic risks to offspring

Type of study Age grouping Effects on sperm parameters Reference
Concentration Morphology Motility Ejaculate volume
Prospective 24-76 [4]
22-80 - [46]
22-80 - - - [50]
All CASA parameters of motility except amplitude of lateral head displacement and beat cross frequency
30-50 - [40]
Retrospective 25-55 - - [41]
Prospective Not specific - Not measured [42]