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New evidence for epigenetic effects of diet on healthy aging
Date:12/6/2012

r frequency of these epigenetic changes than women, which is consistent with men being at a greater risk of bowel cancer. Volunteers with higher vitamin D status tended to show lower levels of methylation, and a similar effect was observed for selenium status. Again, this is consistent with the known links between higher vitamin D and selenium and reduced bowel cancer risk.

The B vitamin folate is essential for health, but in this study, high folate status was associated with increased levels of epigenetic changes linked with bowel cancer. These findings are consistent with some epidemiological studies suggesting that excessive folate intakes may increase risk in some people. The researchers intend to investigate the mechanism for the observed effect of folate on DNA methylation in a follow-up study.

Obesity is also a risk factor for bowel cancer. This study found relationships between body size (height, weight and waist circumference) and epigenetic changes. How excess body weight induces these epigenetic changes, and the consequences for gut health, are currently being investigated at IFR and in Newcastle University.

In summary, the results of this study support the hypothesis that ageing affects the epigenetic status of some genes and that these effects can be modulated by diet and body fatness.


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Contact: Andrew Chapple
andrew.chapple@ifr.ac.uk
44-016-032-51490
Norwich BioScience Institutes
Source:Eurekalert  

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