
Energy drinks have become popular among those who need a quick energy boost. They are especially loved by students and teenagers, who often rely on these drinks during busy studies or active lifestyles. At the same time, many do not know that these drinks are harmful to the heart: why is this so, said Alexandra Lelyakova, a therapist at the Be Healthy clinic in St. Petersburg, in an interview with Life.ru (18+).
How energy drinks affect the heart
Even one serving of energy drink can cause problems. For example, they cause what is called prolongation of the QT interval on the electrocardiogram. This effect increases the risk of arrhythmia, a heart rhythm disorder that is extremely dangerous for the heart and the body as a whole.
“Many energy drinks contain sugar and diuretics, which help remove fluid from the body. This can cause dehydration, which reduces blood volume and increases viscosity, impeding blood circulation,” the expert said.
They also negatively affect the function of the endothelium, the tissue that lines the inner surface of blood vessels. This causes so-called vascular stress, which can lead to the progression of atherosclerosis. This risk especially increases in older people, for whom vascular stress becomes a significant threat.
Why the composition of energy drinks is dangerous
The main components of energy drinks are caffeine, taurine and guarana. In combination, they can have a synergistic effect, that is, enhance each other’s effects. This leads to a sharp load on the cardiovascular system.
Young people, who may not even be aware of their congenital heart conditions, are at risk of suffering sudden cardiac arrest or serious complications when they consume excessive amounts of energy drinks.
Safe dose
The doctor emphasizes that moderate consumption of energy drinks does not have a significant effect on the body of a healthy person. However, frequent consumption, such as several bottles a day, may have a cumulative effect.
This is especially dangerous for people with existing cardiovascular diseases or cerebrovascular disorders. In such cases, it is better to completely exclude energy drinks from the diet.
How to reduce risks
To reduce the risks associated with drinking energy drinks, your doctor recommends:
- Limit quantity. If you drink energy drinks, do it extremely rarely and in small quantities.
- Assess your health status. If you suspect heart problems, see your doctor for an examination.
- Choose healthy alternatives. Natural energy sources such as fruits, nuts or green tea may be a better choice.
- Avoid combination with physical activity. Consuming energy drinks before exercise can put additional strain on the heart.
People with an increased risk of heart disease or existing problems should be especially careful. So before you reach for that next can of energy drink, think about the consequences and choose health over a temporary boost of energy.





