In the last four decades the world population has more than doubled, from 2.5 billion in 1950
to 5.3 billion in 1990. The rate of population growth is the result of the combination of …

There have been several suggestions from different populations that sperm count has
decreased in the past 20 years. Concerns have, however, been raised in the interpretation …

Infertility is a condition that affects the couple. Male or female infertility cannot be considered
in isolation. Since most demographic measures of fertility are based on the woman …

Infertility, defined by the World Health Organization as “a disease of the reproductive system
defined by the failure to achieve a clinical pregnancy after 12 months or more of regular …

Background: Infertility affects 10-15% of couples worldwide with rates steadily increasing in
the Industrialized world, in part due to the deterioration of male reproductive health …

Several recent reports have suggested that the sperm counts of normal men are declining in
most countries. In this study the sperm counts of Finnish men, and their possible changes …

There have been a number of studies over the past 15–20 years which have suggested that
sperm counts in men are on the decline (reviewed in Carlsen et al. 1992). These have been …

In this study the frequency distribution of sperm counts and total sperm counts from more
than 4000 allegedly fertile males were compared with those of husbands in 1000 infertile …

Semen quality has declined among men born in France since 1950 EDrroR,-Several recent
papers have reported a possible decrease in sperm counts.15 Three of them were based on …

Objective. To assess possible secular trends in sperm variables in men according to
previous or subsequent paternity. Design. A comparison of secular trends in sperm variables …