BACKGROUND Herein, we describe the consensus guideline methodology, summarize the
evidence-based recommendations we provided to the World Health Organization (WHO) for …

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 …

Global burden of 369 diseases and injuries in 204 countries and territories, 1990–2019: a
systematic analysis for the Glo Page 1 Global Health Metrics 1204 www.thelancet.com Vol 396 …

Background Male infertility is a widespread condition among couples. In about 50% of
cases, couple infertility is attributable to the male partner, mainly due to a failure in …

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 …

To date 15% of couples are suffering from infertility with 45–50% of males being
responsible. With an increase in paternal age as well as various environmental and lifestyle …

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 …

Multiple changes occur across various endocrine systems as an individual ages. The
understanding of the factors that cause age-related changes and how they should be …

ABSTRACT STUDY QUESTION How has the mean paternal age in the USA changed over
the past 4 decades? SUMMARY ANSWER The age at which men are fathering children in …