01 Sep 2014 --- Energy drinks can cause heart problems according to research presented at ESC Congress 2014 by Professor Milou-Daniel Drici from France. Professor Drici said: "So-called 'energy drinks' are popular in dance clubs and during physical exercise, with people sometimes consuming a number of drinks one after the other. This situation can lead to a number of adverse conditions including angina, cardiac arrhythmia (irregular heartbeat) and even sudden death."