Citrus fruits, like caffeine in coffee, increases acid content in the stomach and this reason alone makes them not to be incorporated in the diet for acid reflux. The fruits contain some content of acid in themselves and instead of reducing possible increase of acid, they add to the already terrible state of the content. This situation together with pressure from within the stomach makes the acid look for available outlets so that it could reduce its quantity. A back flow which is also known as a reflux takes place and burning sensation comes out of this action.

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