(CNN) -- Sometimes the body needs a natural "detox" to help cleanse the digestive system of accumulated food residue.

While some people turn to complex mixtures, the solution may be simpler than you think. (Watch the video above)

Lebanese professor and herbal expert Charbel Freifer explained in an interview with CNN Arabic that the secret lies in kiwi fruit with its peel.

He added: "The peel is like the scrubber we use for washing dishes; as it passes through the digestive system, it cleans the intestines of food residue before finally being expelled from the body."