A new research review adds to a growing body of evidence demonstrating the harmful health effects of energy drink consumption, particularly among people 21 and under. Young people who consume energy drinks may experience sleep disturbances and have an increased risk of ADHD, anxiety, and mood changes, and in severe cases, heart complications. Health experts recommend avoiding energy drinks due to the negative side effects. Healthier beverage options include water, and if kids are drinking caffeine, it should be in low amounts.