www.independent.co.uk -
Some people are more prone to extreme anxiety because of a genetic mutation that they have inherited, according to one of the first studies to investigate the genetic basis of personality differences that can lead to stress disorders.
The mutation is found in about half the population but it exerts its effect on the one in four people who have inherited both copies of it from their parents, the study has found. Such people are at significantly higher risk of being more anxious than the general population and of suffering from anxiety-related conditions such as post-traumatic stress disorder and obsessive-compulsive illnesses.
Scientists say the findings show that it is possible to identify genetic differences between people that directly affect the neuro-transmitting chemicals in the brain influencing variations in psychological traits.
Although many factors affect anxiety, the researchers believe the discovery opens the way to identifying further genes that can predispose someone to becoming nervous to the point of developing a psychological illness...... http://www.independent.co.uk/news/science/dont-worry-woody-anxiety-is-in-the-genes-study-finds-890291 .html
