Purpose Ongoing evidence has suggested the role of male factor infertility as a potential
predictor of mortality and general health status. The aim of the present review is to update …

Male reproduction is a complex process, and numerous medical conditions have the
potential to alter spermatogenesis. In addition, male factor infertility may be a biomarker for …

The dramatic increase in the prevalence of obesity coincides with a decline in reproductive
health indices in both sexes. Energy excess mediates changes to the regulatory …

The prevalence of idiopathic male infertility is high, up to 75% of patients with abnormal
sperm parameters. Hence, the research of its causes is mandatory. Oxidative stress (OS) …

Background Short sleep duration and poor sleep quality are increasingly prevalent in
modern society and may be associated with impaired semen quality, yet studies are …

Background Abnormal semen quality is one of the common causes of infertility. The
relationship between exposure to air pollutants and semen quality is unclear. Objectives To …

Purpose Growing evidence in the literature suggests that obesity is capable of altering
reproductive hormone levels and male fertility. Effects on classic semen parameters and …

STUDY QUESTION What is the semen quality in trans women at time of fertility preservation,
prior to the start of gender-affirming hormone treatment? SUMMARY ANSWER Before the …

Results All the factors under analysis contribute to a significant deterioration of sperm
quality, mainly through decreased sperm concentration, vitality, motility and morphology …

Humankind has been interested in reproduction for millennia, as it is the primary instinct of
all organisms and it is a social, cultural, and medical issue. Infertility and surrogacy are first …