Sleep duration may affect the integrity of sperm DNA

A new study found a link between sleep duration and a measure of chromosomal health in sperm. The findings are published in the Journal of Sleep Research.

In the study of 2020 provided by 796 male volunteers from colleges in Chongqing (China) from 2013 to 2015, volunteers with more than 9 hours per day of sleep and those with 6.5 hours or less per day sleep had 41% and 30% lower High DNA Stainability—an index that represents the proportion of sperm with abnormal chromatin—than did volunteers with 7 to 7.5 hours per day of sleep. Chromatin is a complex of DNA and proteins that forms chromosomes.

"This is new information after our pervious finding that has an inverse U-shaped association with volume and total sperm count. In the previous study, we found that these two semen parameters were highest when sleep is 7.0 to 7.5 hours per day, and either longer or shorter sleep was associated with the decrease of the two semen parameters," said Dr. Jia Cao, co-author of the study.


Explore further

How much sleep do you really need?

More information: Xiaogang Wang et al. Sleep duration is associated with sperm chromatin integrity among young men in Chongqing, China, Journal of Sleep Research (2017). DOI: 10.1111/jsr.12615
Provided by Wiley
Citation: Sleep duration may affect the integrity of sperm DNA (2017, October 16) retrieved 21 May 2019 from https://medicalxpress.com/news/2017-10-duration-affect-sperm-dna.html
This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.
2 shares

Feedback to editors

User comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more