I have heard for many years that drinking soda leeches calcium from our bones. This article suggests that it's possibly just cola drinks but it's probably a safer bet just to leave them alone. Regular sodas are loaded with sugar and neither they nor diet sodas really contribute anything of value to your diet. I prefer plain old water or unsweet iced tea myself. Mama, however, really and truly hates drinking water, she thinks it tastes like medicine. But she enjoys it much more when we add one of these Twist Tubes and each of them adds nutritional value like antioxidants, joint health or immune system support. They really do help the "medicine" go down.