Is Having Energy Drink Safe? Here’s What Happens To Your Body Within 24 Hours

Energy drinks have gained widespread popularity across all age groups, particularly among people seeking a quick fix for fatigue and low energy. The colourful cans promise a surge of focus and vitality, offering a rapid solution to feelings of tiredness. However, with the growing consumption of these beverages, there is also rising concern about their potential health risks, especially within the first 24 hours after consumption. We got in touch with Dietician Parmeet Kaur, Head and Chief Nutritionist at Marengo Asia Hospitals Gurugram explain the effects energy drinks have on the body and the long-term dangers of excessive use.

Energy drinks typically contain sugar, caffeine, taurine, B vitamins, and other compounds such as guarana. The primary stimulant is caffeine, which can range from 80 mg to 300 mg per can, depending on the brand. To put this into perspective, a standard cup of coffee contains approximately 95 mg of caffeine. The high sugar content, often equivalent to several tablespoons, provides an immediate energy boost but can lead to a crash soon after. Taurine, an amino acid, is also commonly added and is believed to enhance brain function and alertness.

Parmeet Kaur explains "While these ingredients may offer a temporary energy surge, they also come with considerable health risks, especially when consumed regularly."

Within the first ten minutes of consuming an energy drink, caffeine begins to enter the bloodstream. As it stimulates the central nervous system, heart rate and blood pressure increase, providing a sense of alertness and energy. For many, this quick boost is why energy drinks are a go-to solution for fatigue.

However, Parmeet warns, “Even in these early stages, people sensitive to caffeine might experience adverse effects such as jitteriness, anxiety, or a rapid heartbeat. It’s important to remember that while you may feel more awake, these sensations come with certain risks.”

Around the 30-minute mark, the caffeine content in the bloodstream reaches its peak. This is when most people feel their most energized and focused. However, this period of heightened alertness can also bring unwanted side effects. Headaches, nausea, dizziness, and restlessness are common during this stage, especially for those not used to high levels of caffeine.

Further, Parmeet shares, “For people with underlying heart conditions, the rapid increase in heart rate caused by energy drinks can be dangerous, potentially leading to arrhythmias or other heart complications.”

At this point, the sugar content also plays a significant role. As the body rapidly metabolizes the sugar, blood glucose levels spike, providing a short-term burst of energy. Unfortunately, this is often followed by a sugar crash, leading to feelings of fatigue and lethargy.

One hour after consuming an energy drink, the sugar crash begins to set in. The rapid decline in blood sugar levels leaves many feeling irritable, tired, and craving more sugar or another energy drink to regain their energy. This cycle can become addictive, as individuals repeatedly seek out these drinks for short-term energy boosts, unaware of the long-term harm they may be causing.

"Frequent consumption of energy drinks can lead to serious health consequences, particularly concerning blood sugar regulation," says Parmeet. “Over time, these constant spikes and crashes increase the risk of insulin resistance and type 2 diabetes.”

Caffeine has a half-life of three to five hours, meaning that even after several hours, half of the caffeine from the energy drink remains in your system. If consumed in the afternoon or evening, this lingering caffeine can interfere with sleep, setting off a vicious cycle of fatigue the next day.

This can be particularly harmful to teenagers and young adults, a demographic that is heavily targeted by energy drink marketing. Parmeet explains, "For young people whose brains are still developing, insufficient sleep can negatively affect focus, memory, and cognitive function. Unfortunately, energy drinks often exacerbate this issue by disturbing natural sleep patterns."

For regular energy drink consumers, caffeine withdrawal symptoms may start appearing 12 to 24 hours after the last drink. These symptoms can include headaches, irritability, and fatigue. Over time, the body develops a dependency on caffeine, making it increasingly difficult to feel alert without it.

Parmeet explains “Many people develop a reliance on energy drinks to function normally, leading to a cycle of dependency that is difficult to break. This can also lead to long-term health issues.”

While occasional consumption of energy drinks may not pose significant risks for healthy people, regular or excessive use can lead to serious long-term consequences. The high levels of caffeine and sugar can contribute to a range of health problems:

- Heart Issues: Chronic consumption can increase the risk of high blood pressure, irregular heart rhythms, and in extreme cases, heart attacks.

- Mental Health Problems: Frequent caffeine use has been linked to anxiety, depression, and insomnia. Over time, these mental health issues can become chronic.

- Weight Gain: The high sugar content in energy drinks contributes to weight gain and obesity.

- Addiction: Relying on energy drinks for daily functioning can lead to long-term dependence on both caffeine and sugar.

Although energy drinks provide a temporary boost, their risks—both immediate and long-term—cannot be ignored. Caffeine and sugar can cause a range of short-term issues like headaches, jitters, and crashes, but they also contribute to more severe health problems like heart disease, diabetes, and mental health issues over time.

Parmeet shares, "If you regularly rely on energy drinks to get through the day, it’s essential to reevaluate your sources of energy. Focus on a balanced diet, regular exercise, and staying hydrated to maintain your energy levels more healthily."

In moderation, energy drinks may not pose a significant threat, but for many, avoiding them altogether could be the best decision for long-term health.

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