In one study, published in 2004, researchers found that a diet free of artificial colorings and the preservative sodium benzoate appeared to reduce hyperactive behavior among preschoolers.

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Diet soda is also made with artificial sweeteners and may increase your appetite.

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In a 2007 study at the University of South Carolina at Columbia, 25 experienced swimmers did six timed trials while sticking to an artificial schedule that controlled for variables like sleep, diet and other factors.

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Instead, it talks of "reconciling pleasure and a balanced diet", and how it contains no artificial colourings, preservatives or hydrogenated fats.

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