A retrospective cohort study of geographic differences in the semen of 1,012 sperm donors in China

ABSTRACT:

Background

Male reproductive health has become a serious public health concern, and semen quality is essential to male reproduction. We aimed to investigate geographical differences in the semen quality of sperm donors from northern and southern China by enrolling donors across the country.

Methods

A total of 1,012 sperm donors were enrolled in this study between 2015 and 2019. Donors were first divided into two parts based on their birthplace according to the "Qinling-Huaihe" line, and secondly, by their residential latitude. Finally, donors were re-classified into two groups (typically north and south) which contained 667 samples.

Results

Statistically significant differences in sperm concentration were observed among men from different latitudes in China (P=0.

SUBMITTER: Zhao Q 

PROVIDER: S-EPMC10006001 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature