Navigation Links
Cardiac MRI reveals energy drinks alter heart function

CHICAGO Healthy adults who consumed energy drinks high in caffeine and taurine had significantly increased heart contraction rates one hour later, according to a study presented today at the annual meeting of the Radiological Society of North America (RSNA).

"Until now, we haven't known exactly what effect these energy drinks have on the function of the heart," said radiology resident Jonas Drner, M.D., of the cardiovascular imaging section at the University of Bonn, Germany, which is led by the study's principal investigator, Daniel K. Thomas, M.D. "There are concerns about the products' potential adverse side effects on heart function, especially in adolescents and young adults, but there is little or no regulation of energy drink sales."

Energy drinks represent a multibillion dollar industry that is growing every day. While teenagers and young adults have traditionally been the largest consumers, in recent years more people of all demographics have begun consuming energy drinks.

A 2013 report from the Substance Abuse and Mental Health Services Administration stated that in the U.S. from 2007 to 2011, the number of emergency department visits related to energy drink consumption nearly doubled, increasing from 10,068 to 20,783. Most of the cases were identified among patients aged 18 to 25, followed by those aged 26 to 39.

"Usually energy drinks contain taurine and caffeine as their main pharmacological ingredients," Dr. Drner said. "The amount of caffeine is up to three times higher than in other caffeinated beverages like coffee or cola. There are many side effects known to be associated with a high intake of caffeine, including rapid heart rate, palpitations, rise in blood pressure and, in the most severe cases, seizures or sudden death."

For the study, which is ongoing, Dr. Drner and colleagues used cardiac magnetic resonance imaging (MRI) to measure the effect of energy drink consumption on heart function in 18 healthy volunteers, including 15 men and three women with a mean age of 27.5 years. Each of the volunteers underwent cardiac MRI before and one hour after consuming an energy drink containing taurine (400 mg/100 ml) and caffeine (32 mg/100 ml).

Compared to the baseline images, results of cardiac MRI performed one hour after the study participants consumed the energy drink revealed significantly increased peak strain and peak systolic strain rates (measurements for contractility) in the left ventricle of the heart. The heart's left ventricle receives oxygenated blood from the lungs and pumps it to the aorta, which distributes it throughout the rest of the body.

"We don't know exactly how or if this greater contractility of the heart impacts daily activities or athletic performance," Dr. Drner said. "We need additional studies to understand this mechanism and to determine how long the effect of the energy drink lasts."

The researchers found no significant differences in heart rate, blood pressure or the amount of blood ejected from the left ventricle of the heart between the volunteers' baseline and second MRI exams.

"We've shown that energy drink consumption has a short-term impact on cardiac contractility," Dr. Drner said. "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."

Dr. Drner said that while long-term risks to the heart from drinking energy drinks remain unknown, he advises that children, as well as people with known cardiac arrhythmias, should avoid energy drinks, because changes in contractility could trigger arrhythmias. He also cautions that additional study is needed to address risks posed by the consumption of energy drinks in combination with alcohol.


Contact: Linda Brooks
Radiological Society of North America

Related biology news :

1. Misread heart muscle gene a new clue to risk of sudden cardiac death
2. Fondation Leducq awards $6 million grant for global research network for cardiac regeneration
3. University of Maryland Medical Center launches genetic-testing program for cardiac patients
4. Researchers identify genetic basis of cardiac, craniofacial birth defects
5. Risk of cardiac arrest depends on where you live
6. Research finds heart remodeling rapidly follows cardiac injury
7. A millimeter-scale, wirelessly powered cardiac device
8. Research yields two firsts regarding protein crucial to human cardiac function
9. Sickle cell trait can cause sudden cardiac death in black athletes: Why is this controversial?
10. An economical, effective and biocompatible gene therapy strategy promotes cardiac repair
11. New method generates cardiac muscle patches from stem cells
Post Your Comments:
Related Image:
Cardiac MRI reveals energy drinks alter heart function
(Date:10/29/2015)... NEW YORK , Oct. 29, 2015 /PRNewswire/ ... wearable technology, announced a partnership with 2XU, a ... accessories, to deliver a smart hat with advanced ... runners and other athletes to monitor key biometrics ... of the strategic partnership, the two companies will bring ...
(Date:10/27/2015)... 2015 Synaptics Inc. (NASDAQ: SYNA ), the ... has adopted the Synaptics ® ClearPad ® ... its newest flagship smartphones, the Nexus 5X by LG ... --> --> Synaptics works closely ... collaboration in the joint development of next generation technologies. ...
(Date:10/26/2015)... , Oct. 26, 2015  Delta ID Inc., a ... to mobile and PC devices, announced its ActiveIRIS® technology ... arrows NX F-02H launched by NTT DOCOMO, INC in ... is the second smartphone to include iris recognition technology, ... ARROWS NX F-04G in May 2015, world,s first smartphone ...
Breaking Biology News(10 mins):
(Date:11/24/2015)... , Nov. 24, 2015 /CNW/ - iCo Therapeutics ... today reported financial results for the quarter ended ... expressed in Canadian dollars and presented under International ... United States ," said Andrew Rae ... advancements regarding iCo-008 are not only value enriching ...
(Date:11/24/2015)... 24, 2015  Clintrax Global, Inc., a worldwide provider of clinical ... today announced that the company has set a new quarterly earnings ... on quarter growth posted for Q3 of 2014 to Q3 of ... Mexico , with the establishment of an ... --> United Kingdom and Mexico ...
(Date:11/24/2015)... SHPG ) announced today that Jeff ... 27 th Annual Healthcare Conference in New York ... a.m. EST (1:30 p.m. GMT). --> SHPG ) announced ... in the Piper Jaffray 27 th Annual Healthcare Conference in ... 1, 2015, at 8:30 a.m. EST (1:30 p.m. GMT). --> ...
(Date:11/24/2015)... 2015  Twist Bioscience, a company focused on ... Twist Bioscience chief executive officer, will present at ... 1, 2015 at 3:10 p.m. Eastern Time at The Lotte ... --> --> About ... is on Twitter. Sign up to follow our ...
Breaking Biology Technology: