Read the text and fill in the gaps with the words derived from the words given

It is natural to be worried about financial problems, examinations, or moving to another country. However, if you feel distressed and worry without any reasons all the time, it can be a sign of an anxiety disorder. It is a mental [ ] in which a person is so anxious that their normal life is affected. According to statistics, 264 million people in the world suffer from this illness. Panic attacks, [ ] fears, and compulsive behaviour are examples of anxiety disorders. It can also influence physical condition. There can be such symptoms as [ ], dry mouth, excessive [ ], rapid heartbeat, nausea and headache. All of these unpleasant symptoms are the result of overloading the nervous system, which regulates [ ], digestion and blood circulation. The given symptoms show that the brain prepares the body for a [ ] situation. With a real threat, such a reaction of the body is really necessary, but with an imaginary one these effects will only be harmful, and they will continue to bother you until the anxiety goes away.