“…The problem can also cause extra-auditive damage, such as sleep disorders, cardiovascular disorders, stress, fatigue, tension, irritability, inattention, tiredness, nervousness, headache, and arterial hypertension 7,8 . According to the American Speech Language Hearing Association (ASHA), 61% of American teenagers have personal stereos 9,10 , while 51% of students in American high schools have symptoms of hearing loss. An interesting part of that study was the fact that most students prefer high volumes, as adults tend to use more moderate volumes.…”