The kidneys' role is to act as a filter, to flush out unwanted toxins and products from the body. To do this, they need plenty of water, which is why it is recommended that we drink at least two liters or water a day. The high caffeine content in energy and sports drinks causes more water to pass through the body at a higher speed, meaning that the kidneys do not have enough water to function properly in clearing toxins from the body. Therefore, energy drinks can result in excessive dehydration and can prevent the kidneys from doing their job properly.
This dehydrating effect and problems with the kidneys are made even more profound when energy drinks are mixed with alcohol, which is very common these days. Cocktails such as Red Bull and vodka are widely available in bars and clubs. However, the combination of alcohol, which causes drinkers to pass more water, and energy drinks, can result in severe dehydration. In addition, as the kidneys are under more stress to work harder in flushing toxins from the body, such cocktails can result in kidney failure.
The fact that dialysis patients (dialysis is a treatment for those who have kidney problems, used to assist their kidneys in clearing toxins from the body) are recommended to avoid energy drinks due to the high caffeine, sugar and herb content within them is all the evidence I need to avoid energy drinks.