New Evidence That Dark Chocolate Helps Ease Emotional Stress

The “chocolate cure” for emotional stress is getting new support from a clinical trial published online in ACS’ Journal of Proteome Research: Gut Microbiota, and Stress-Related Metabolism in Free-Living Subjects. It found that eating about an ounce and a half of dark chocolate a day for two weeks reduced levels of stress hormones in the bodies of people feeling highly stressed. Everyone’s favorite treat also partially corrected other stress-related biochemical imbalances.

Sunil Kochhar and colleagues note growing scientific evidence that antioxidants and other beneficial substances in dark chocolate may reduce risk factors for heart disease and other physical conditions. Studies also suggest that chocolate may ease emotional stress. Until now, however, there was little evidence from research in humans on exactly how chocolate might have those stress-busting effects.

In the study, scientists identified reductions in stress hormones and other stress-related biochemical changes in volunteers who rated themselves as highly stressed and ate dark chocolate for two weeks.

“The study provides strong evidence that a daily consumption of 40 grams [1.4 ounces] during a period of 2 weeks is sufficient to modify the metabolism of healthy human volunteers,” the scientists say.

“Metabolic Effects of Dark Chocolate Consumption on Energy, Gut Microbiota, and Stress-Related Metabolism in Free-Living Subjects”

Source:  American Chemical Society (ACS)

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Conclusions
Our study in free living and healthy humans demonstrates a link between metabolic phenotype of individuals and specific dietary patterns. The current observations strongly support the idea that specific foods impact on human metabolism through the modulation of gut microbial activities. The daily consumption of dark chocolate resulted in a significant modification of the metabolism of healthy and free living human volunteers with potential long-term consequences on human health within only 2 weeks treatment. This was observable through the reduction of levels of stress-associated hormones and normalization of the systemic stress metabolic signatures. Therefore, subtle changes in dietary habits are likely to modulate the metabolic status of free-living individuals that might be associated with long-term health consequences, in particular via the activity of the symbiotic bacterial partners.

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ARTICLE FOR IMMEDIATE RELEASE:
http://pubs.acs.org/stoken/presspac/presspac/full/10.1021/pr900607v

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