1. Stress and anxiety - caffeine in large quantities causes harmful side effects like irritability, nervousness and continuous stress
2. Very sugary - culprit for multiple problems like tooth decay, obesity, weakening of the immune system and risk of heart diseases.
3. Hormonal change and Mood alteration - stimulant caffeine reduces serotonin levels which ultimately reduces levels of positive feelings
4. Insomnia - The large amount of caffeine in these drinks keeps you alerted and creates insomnia causing you to use them again the next day to keep energy up.
5. Extra Heavy Burdens on Your Organs - Energy drinks urges your vital organs to react quickly in an emergency pace causing them to overwork