Nearly one billion people worldwide suffer from some form of mental disorder, according to the latest UN data – a staggering figure that is even more worrying if you consider that it includes around one in seven teenagers. To make matters worse, in the first year of the pandemic, rates of common conditions such as depression and anxiety, went up by more than 25 percent, the UN health agency said on Friday. In its most extensive review of mental health since the turn of the century, the World Health Organization has urged more countries to get to grips with worsening conditions.