By Lucinda Cameron, PA Scotland Researchers have found a genetic ‘switch’ that can control anxiety, according to a team from the University of Aberdeen. They discovered a section of DNA which “switches” on key genes in parts of the brain that affect anxiety levels in mice. When this “switch” was removed, the mice became more anxious. The team hopes that further research into this switch could help improve the lives of people with anxiety by identifying a new target for medication. Professor Alasdair Mackenzie, from the university, explained: “We already know that 95% of the genetic differences…