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Is Sleep Duration Linked to Integrity of Sperm DNA?

by Hannah Joy on October 17, 2017 at 1:49 PM
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Is Sleep Duration Linked to Integrity of Sperm DNA?

Sleep duration was found to be associated with sperm chromatin integrity in men, reveals a new study.

The findings are published in the Journal of Sleep Research.

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In the study of 2020 semen samples 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 percent and 30 percent 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 previous finding that sleep duration has an inverse U-shaped association with semen volume and total sperm count.
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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.



Source: Eurekalert
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