A recent study Published in the American Journal of Physiology examined the effects of rose hip in mice. The researchers aimed to determine whether or not rose hip could prevent or treat obesity and/or diabetes.
There were four groups of mice, all of which were fed a high fat diet. There were two groups of lean mice, one of which supplemented with rose hip and one that did not. There were also two groups of obese mice, one group that supplemented with rose hip and one that did not. The groups that did not consume rose hip were used as a control group to compare to the groups that did consume rose hip.
After being on a high fat diet for 20 weeks either with of without rose hip, all of the groups were examined for physiological changes relevant to the study. In the lean mice, the researchers found that supplementation with rose hip effectively reduced the amount of body weight and body fat gained on the high fat diet. In the obese mice, it was found that the rose hip prevented or actually reversed the gain in body weight and body fat experienced on the high fat diet. In addition glucose tolerance was improved, lipogenic proteins were downregulated, and there was a reduction in total cholesterol along with a favorable change in the LDL/HDL ratio.
After examining the changes that took place in the mice over a 20 week period, the researchers concluded that supplementation with rose hip may prevent the development of diabetes by improving glucose tolerance. They speculated that the downregulation of lipogenic proteins observed may be a possible cause for the improvement in glucose tolerance. While this study does demonstrate that rose hip may improve glucose tolerance, the effects of some supplements observed in mice do not always carry over directly to those observed in humans. It would also be interesting to see a study like this done on a high carbohydrate diet to induce gains in body weight and body fat rather than a high fat diet. This is a relatively recent study which shows the potential of rose hip as a blood glucose control supplement, but at this point more research still needs to be done.
Andersson U, Henriksson E, Strom K, Alenfall J, Goransson O, & Holm C. (2011). Rose hip exerts antidiabetic effects via a mechanism involving downregulation of the hepatic lipogenic program. American Journal of Physiology. Endocrinology and Metabolism. 300(1), E111-21.
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