“…Most studies found no association between male age and FR (Nijs et al, 2011;Abdel Raheem et al, 2013), BP (Beguería et al, 2014;Meijerink et al, 2016), CP (Abdel Raheem et al, 2013;Beguería et al, 2014;Meijerink et al, 2016;Wu et al, 2016;Ma et al, 2018), ongoing pregnancy (Beguería et al, 2014;Meijerink et al, 2016;Wu et al, 2016;Bartolacci et al, 2018), LBR (Abdel Raheem et al, 2013;Beguería et al, 2014;Ma et al, 2018;Mariappen et al, 2018;Park et al, 2018), low neonatal birth weight (<2500g) in singletons (Ma et al, 2018), and preterm birth and birth defects (Wu et al, 2016). However, some studies found that paternal age was an independent factor negatively affecting the FR (Bartolacci et al, 2018), CPR (Yu et al, 2019), IR (Yu et al, 2019), embryonic aneuploidy risk (Bilibio et al, 2021), LBR (McPherson et al, 2018;Yu et al, 2019;Wen et al, 2021) and term-birth rates (liveborn infants between 37 and 41 weeks gestation) (McPherson et al, 2018). McPherson et al (2018) described the evidence of negative associations between paternal age and both viable pregnancies and live births, with a 10% decrease in the probability of pregnancy in women who were aged 35 years with a male partner over 40 years, vs. a male partner aged under 30 years.…”