Sleepless Nights and Energy Drinks: Are Students Putting Their Hearts at Risk?
By Emmanuel Daniel
Many university students are too busy in their day-to-day academic lives to get a good night’s sleep for several reasons, including meeting deadlines, studying for exams, and fulfilling social obligations. They will frequently resort to using caffeine-based products like energy drinks, coffee and tea to keep them awake and alert. They might not appear to be problematic behaviours, but there is growing evidence that they may have significant implications for cardiovascular health.
A recent study was conducted among students of the Faculty of Basic Medical Sciences, Bayero University Kano, on the Effect of Sleep Deprivation and Caffeine on Cardiovascular Parameters (Blood Pressure, Mean Arterial Pressure, and Pulse Rate). Results indicate significant physiological implications of these popular lifestyles.
The study involved comparing four groups of students: sleep-deprived Students, caffeine consumers with normal sleep, sleep-deprived + caffeine students, and normal sleep without caffeine. The systolic blood pressure, diastolic blood pressure, mean arterial pressure and pulse rate were measured and analysed.
Significant differences were found in several cardiovascular parameters. Students who consumed caffeine regularly but still had normal sleep had the highest mean arterial and diastolic blood pressures. This implies that caffeine can raise the strain on blood vessels, making the heart pump more to move blood around the body.
What is interesting is that the pupils who were sleep-deprived had more elevated pulse rates, as though in response to a lack of sleep, the body may be attempting to engage the “fight-or-flight” mechanism, also known as the sympathetic nervous system. Activating this system for prolonged periods can increase cardiovascular stress over time.
There were also significant differences found between the males and females in the study. The female students who consumed caffeine and were then sleep-deprived had significantly higher pulse rates than the males. The discovery suggests there may be gender differences in how men and women react to life changes that can lead to heart disease.
Physiologically, lack of sleep diminishes the body’s capacity to manage stress hormones properly. Meanwhile, caffeine antagonises the effects of adenosine, a naturally occurring compound that has a relaxing and vasodilatory (blood vessel-widening) effect. These mechanisms, combined, can alter normal cardiovascular function and may lead to health risks when they persist for extended periods.
The results are especially relevant in the time of energy drinks, which are becoming a favourite sidekick for students. Many study participants reported frequently using energy drinks to stay awake during schoolwork. Though some individuals say caffeine gives them a boost in concentration and helps fend off fatigue, overreliance on caffeinated drinks should not be a substitute for good sleep patterns.
The bottom line is that this study shows that sufficient sleep remains one of the major factors in a healthy lifestyle. It is then recommended physiologically that students get the 7-9 hours of sleep they need every night and limit caffeine consumption. Schools can also be places to raise awareness of sleep hygiene, stress management, and responsible caffeine use.
Late nights and caffeine may be part of a student’s life, but making them habits can have consequences. Keeping the heart healthy starts with the simple things you can do every day, and sometimes the best way to get your heart pumping is to get a good night’s sleep.
Extracted from Emmanuel Miracle Daniel’s thesis titled ‘The Effect of Sleep Deprivation and Caffeine on Cardiovascular Parameters Among Bayero University Students,’ supervised by Professor Nafisatu Yusuf Wali.









