Tina Kold Jensen

TL;DR: The growing number of reports demonstrating that common environmental contaminants and natural factors possess estrogenic activity presents the working hypothesis that the adverse trends in male reproductive health may be, at least in part, associated with exposure to estrogenic or other hormonally active environmental chemicals during fetal and childhood development.

TL;DR: The study suggests that the current WHO guidelines for normal semen quality should be used with caution, as some men with sperm counts above the lower limit of the normal range defined by WHO may in fact be subfertile.

TL;DR: High or low BMI was associated with reduced semen quality, and it remains to be seen whether the increasing occurrence of obesity in the Western world may contribute to an epidemic of poor semen quality registered in some of the same countries.

TL;DR: There is an urgent need to prioritize research in reproductive physiology and pathophysiology, particularly in highly industrialized countries facing decreasing populations, because environmental exposures arising from modern lifestyle, rather than genetics, are the most important factors in the observed trends.

TL;DR: Overweight and obesity were associated with an increased prevalence of azoospermia or oligozoospermia, and whether weight normalization could improve sperm parameters should be evaluated further.