Some other risk of Soda you probably don't know:
Soda cans are coated with the bisphenol A (BPA) which is very harmful for heart and endocrine gland.
Caramel coloring in soda is responsible for cancer study: Artificial brown colour in soda is not imparted by caramelized sugar. It is another chemical process which result in formation of 2-methylimidazole (2-MI) and 4 methylimidazole (4-MI) which is potential cause of cancer to major organs of body.