Caffeine is a common ingredient in energy drinks, along with sugars, vitamins, herbs, and supplements. However, each brand has its own caffeine concentration. Many people, especially fitness and health-conscious individuals, consume energy drinks with a mistaken belief that caffeine increases their alertness and endurance. Science, however, has reservations about these claims. Instead, we know that energy drinks are high in caffeine and sugar, contributing to weight gain and worsening diabetes. When young people mix energy drinks with alcohol, the problem becomes even more dangerous as caffeine impairs your capacity to comprehend how drunk you are, making you drink more and leading to disastrous consequences.