I have less problem with potatoes (which are my carb-crack, anyway, so I have to be extra careful about eating too much) and more with refined breads and pastas. I have 1 can of soda a day during warmer weather, for the caffeine - I have severe asthma, and caffeine is a xanthine, a class of drugs that (for no discernible reason) has a positive effect on the airways. During cooler months I drink hot tea. Why don't I drink iced tea? Because I drink way too much if I keep it made in the house all the time, whereas it is much easier to limit my intake of soda to 1 can and stop. :)