Nut consumption causes changes in sperm DNA function, studies show

Many environmental and lifestyle factors are associated with poor sperm quality, and diet is one of the most plausible factors identified in recent years. In addition, several studies have reported a close association between changes in specific sperm DNA methylation signatures and semen quality. However, to date, no randomized controlled trials (RCTs) have been published to evaluate the effects of diet on these changes in sperm DNA function.

Researchers at the Faculty of Human Nutrition, Pelebilgiri Institute of Health and CIBERobn (led by Dr. Jordi Saras Salvado) at the University of Robilai Birgili, and researchers at the University of Utah (led by Dr. Douglas T. Karel) are nuts (almonds, hazelnuts, walnuts). For the first time evaluated the impact of short-term / medium-term consumption of a mixture of sperm DNA methylation patterns in healthy individuals who report eating a Western diet. The analysis was conducted within the framework of the FERTINUTS trial, an RCT led by Dr. Mónica Bulló. The results were announced in 2018. Studies have shown that the inclusion of a nut mixture for 14 weeks significantly improves sperm count, viability, motility, and morphology.

This new study was conducted in 72 healthy quitting young participants in the FERTINUTS trial (nut group, n = 48; control group, n = 24) and was recently published in a scientific journal. Andrology.. The researchers observed that methylation of 36 genomic regions was significantly different between baseline and end of study only in the nut-fed group, with 97.2% of the regions showing hypermethylation.

According to researchers, these findings provide the first evidence that adding nuts to a normal Western diet affects sperm DNA methylation in certain areas.

Albert Salas-Huetos, the first author of this article (currently working at Harvard University in the United States), said: “This study shows that it responds to several sensitive regions of the sperm epigenome. diet, And it can result in changes in sperm and its fertility. Researchers also point out that the potential health benefits of the findings require further research to validate the results found in other populations.

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Overweight and obesity are associated with poor sperm quality

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For more information:
Albert Salas-Huetos et al, Sperm DNA Methylation Altered After Short Nut Supplementation in Healthy Men Eating Western Diet Andrology (2020). DOI: 10.1111 / andr.12911

Provided by Universitat Rovira i Virgili

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