Researchers aren’t 100 percent certain what causes anxiety disorders but most believe that anxiety is hereditary at least in part.
You are far more likely to experience anxiety if you’ve suffered from trauma, have relatives who have suffered with anxiety disorders and mental illnesses and also if you have a physical condition such as a thyroid issue.
Most researchers therefore agree that anxiety is genetic but can also be influenced by environmental factors. It is possible to have anxiety without it running in your family. There is a lot about the link between genes and anxiety disorders that we don’t understand, and more research is needed.
I hope that explains the possible generic link.