Teenagers should consider setting limits for how much time they spend online each day, academics have said, after a new study found that internet addiction may have detrimental effects on the brains of youngsters. Internet addiction can cause “negative behavioural and developmental changes” in the brains of adolescents, the experts said. These changes could mean teenagers struggle to maintain relationships and social activities, and lie about online activity. Teens addicted to the internet could also experience disrupted sleep and develop irregular eating patterns, the researchers said. It com…