Anxiety can be hereditary. There are both environmental and hereditary factors that are at play for anxiety, but they have found a relationship between anxiety and depression as it pertains to one's genetics. There is a chemical in our brain called serotonin, it's kind of our happy hormone or the thing that helps us feel calm and relaxed. In the case of anxiety, it is normally too low. We've found that there are certain genetic risks for not processing serotonin appropriately or not making enough of it, both of which can lead to anxiety or depression. If you feel like you're having this problem, I suggest talking with your doctor.