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Consuming Whole Grains Linked With Loss of Calories & Increased Metabolism

Eating whole grains increases calorie loss, says a new study published in the American Journal of Clinical Nutrition.

Consuming whole grains in the place of refined grains increases calorie loss through a combination of lesser retention of calories during digestion, and accelerated metabolism. The health benefits of including whole grains in the diet are not unknown; previous studies have suggested a whole plethora of them. However, it had not been established as to whether they could help in controlling one’s weight—until now: the new study provides insight into how whole grains can assist in the management of one’s weight.

“Many previous studies have suggested benefits of whole grains and dietary fibre on chronic disease risk. This study helps to quantify how whole grains and fibre work to benefit weight management, and lend credibility to previously reported associations between increased whole grains and fibre consumption, lower body weight and better health,” says study’s first author, Phil J. Karl.

Karl and his colleagues enlisted the participation of a group of volunteers who were provided with food including either whole grains (matching the recommended dietary allowance (RDA) for fibre) or refined ones. The composition of the diets differed only in the grain type (and thus in the fibre content). The findings show that those of the former category of diet lost an additional 100 calories daily; these people displayed an increased metabolic rate during the resting state, and they also had a larger amount of calories lost in faeces because fewer were left behind during digestion.

The authors describe the extra calorie loss as being tantamount to half hour brisk walking.

Furthermore, the extra fecal energy loss was the result of the effects of the fibre content on the digestion of calories from other foods, and not because of the extra fibre itself.

The researchers add that these beneficial effects were only generated because of a close adherence to the particular diet, and so, they include a word of caution regarding the interpretation of their findings.


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