"We saw that those who ate whole grains were more flatulent and had several departures of air during the day," lead author Stine Vuholm from the University of Copenhagen, Denmark, was quoted as saying by media.

"But those who didn't eat whole grains, felt more bloated and tired during the same period," she added.

A whole grain food means that it contains all the essential parts and naturally-occurring nutrients of the entire grain seed. In non-whole-grain foods, the husk and other parts of the grain, which contain fibre and vitamins, are removed.

In the current study, researchers recruited 75 participants to analyse the effects of whole grains on the gut. Some replaced products with whole grain versions, and were compared against a control group who ate no whole grains.

Those who ate whole grains noticed that their food took longer to pass through the intestines than those limited to wheat. Vulholm said that more frequent trips to the toilet might not sound enticing but it is actually a sign of good health.


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