Heart failure

Contrary to its name, heart failure does not mean the heart has stopped working completely. It means that the heart is not pumping enough blood to the rest of the body. Heart failure can occur on the right side (which means the lungs aren’t receiving enough oxygen) or both sides, which is more common. Symptoms include blood pooling in the extremities, liver, abdomen, and/or the veins in the neck, as well as shortness of breath and fatigue. Heart failure is usually caused by coronary heart disease (CHD), high blood pressure, or diabetes.

Energy drinks have been shown to spike blood pressure in healthy adults, and to increase stress hormones.