Hi Angela, Yes it may well be a cause but it is not the only cause. I know one person who has it and he has never had a diet drink or food in his life nor does he drink any sodas or eat junk food. Although one might say that the white bread he has with all 3 meals is junk! Salt makes his menieres worse but they only had table salt and he has never tried natural sea salt. I also know a family who drank diet cola regularly and 1 of them still does (around 3 a day) and this person has very bad menieres.