For anyone who has kept up with the polarising president, they’ll know that he does have one addiction: Diet Coke. So much so that he's had a ‘Diet Coke’ button installed in the Oval Office.

It’s no secret that fizzy drinks – Coke, Lemonade, Fanta – aren’t exactly ... But are artificial sweeteners really the answer? Whether or not diet versions are better than full-fat and ...