We all are fond of soda drinks. The drink contains high amount of calories. Many people drink diet coke and think that it is a good alternative to soda drinks. You might think that diet soda does not have any calories and sugar. The reality is that diet soda is very harmful for health and it has many side effects. The drink can increase your body fat. It can cause metabolic syndrome and heart disease. You should be aware that diet soda increases cholesterol levels. The drink contains caffeine, which can be very harmful for you. The top 7 side effects of drinking diet soda are as follows.