Coca cola is an unhealthy beverage for our body. There are so many harmful effects of drinking coca cola. These beverage contains sweet sugar which are made artificially may cause kidney failure. Such beverage also reduce our metabolism level. When coca cola or such other products were not introduced in the market obesity and diabetes are not a major problem. But by introducing these products a large number of population prone to such disease including children and teenager’s. Bad effect of such beverage is large so we should try to avoid it as much as possible.