BACKGROUND Modern reproductive behavior in most developed countries is characterized
by delayed parenthood. Older gametes are generally less fertile, accumulating and …

Objective To examine the potential effects of lifestyle factors on male reproductive health.
Evidence of a global decline in human sperm quality over recent decades has been …

BACKGROUND Although spontaneous miscarriage is the most common complication of
human pregnancy, potential contributing factors are not fully understood. Advanced …

The average age of fathers at first pregnancy has risen significantly over the last decade
owing to various variables, including a longer life expectancy, more access to contraception …

Over the last decade, there has been a significant increase in average paternal age when
the first child is conceived, either due to increased life expectancy, widespread use of …

In modern post-transition societies, we are reproducing later and living longer. While the
impact of age on female reproductive function has been well studied, much less is known …

Objective To test a novel method to select spermatozoa with high chromatin integrity. Design
Specimens with high sperm chromatin fragmentation (SCF) were selected by density …

Objective To assess the impact of aging on routine semen and computer-assisted sperm
analysis (CASA) motility parameters according to the current World Health Organization …

Abnormal standard semen characteristics and reduced sperm chromatin maturity can
appear with increasing male age. However, the influence of paternal age on semen …

This study assessed sperm quality declining on relation to paternal age and its impact on in
vitro fertilization (IVF) outcomes in order to estimate the APA (Advanced Paternal Age) cutoff …