BACKGROUND Numerous studies have reported declines in semen quality and other
markers of male reproductive health. Our previous meta-analysis reported a significant …

BACKGROUND Reported declines in sperm counts remain controversial today and recent
trends are unknown. A definitive meta-analysis is critical given the predictive value of sperm …

BACKGROUND Semen quality is taken as a surrogate measure of male fecundity in clinical
andrology, male fertility, reproductive toxicology, epidemiology and pregnancy risk …

Sperm DNA damage is a useful biomarker for male infertility diagnosis and prediction of
assisted reproduction outcomes. It is associated with reduced fertilization rates, embryo …

Background It is now 11 years since publication of the WHO 2010 guidelines for semen
assessment values, and it is critical to determine whether they are still valid and/or whether …

Although semen quality is an important determinant of fertility, defining clear thresholds for
normal ranges has proven difficult. According to'time to pregnancy'studies, fecundity starts to …

For over 30 years, sperm morphology assessment has been one of the most common tests
in evaluation of fertility. This review examines the clinical relevance of sperm morphology …

The diagnosis of unexplained infertility can be made only after excluding common causes of
infertility using standard fertility investigations, which include semen analysis, assessment of …

In 2010, the World Health Organization established new reference values for human semen
characteristics that are markedly lower than those previously reported. Despite using …

Traditionally, the diagnosis of male infertility has relied upon microscopic assessment and
biochemical assays to determine human semen quality. The conventional parameters given …