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Caffeine-Heavy Drinks Can Increase Blood Pressure and Disturb Heart Rhythm
December 2, 2013

Caffeinated energy drinks can increase the heart's contraction rates in healthy people, according to a new study.

"We've shown that energy drink consumption has a short-term impact on cardiac contractility," study researcher Jonas Dörner, M.D., of the University of Bonn, said in a statement. "Further studies are needed to evaluate the impact of long-term energy drink consumption and the effect of such drinks on individuals with heart disease."

The team took cardiac MRIs of the participants both before and 1 hour after they consumed an energy drink, which contained 400 mg/100 ml taurine and 32 mg/100 ml caffeine.

Results show that compared with the images taken before the participants consumed the energy drinks, the post-beverage MRIs showed that they had increased peak strain and peak systolic strain rates in the heart's left ventricle. The researchers note that the left ventricle receives oxygenated blood from the lungs, which it then pumps to the aorta for distribution to the rest of the body.

The FDA announced earlier this year that it is investigating the safety of food and drink products that have caffeine added to them.

In this study the participants just consumed one "energy drink". You can only imagine what's happening to your heart if you consume multiple cans which we often see athletes doing.

Stick With Sports Drinks
If you're an athlete the last thing you should be doing is taking a risk with your heart. Stick with proven sports drinks that provide all the hydration, electrolytes and REAL energy that you need (the kind of energy that comes from complex carbohydrates). Caffeine and other stimulants don't provide energy, they cause you to exert the energy that is already in your body from other sources, namely your glycogen stores and the energy that you get from your sports nutrition products.

e-Fuel is a perfect example of what you should reach for instead of stimulant based "energy drinks". e-Fuel is loaded with complex carbohydrates, very little sugar, all the electrolytes you need and is 100% natural ... no artificial flavors, sweeteners or colors, just clean energy. There are other good sports drinks, this is just one example.

> Sports Drink Comparisons


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