If it's something that developed only over the last few years, I would check anything that may have caused it. Possible reason? Heavy metals. If you have ever had an Amalgam (silver) filling, especially if you had it removed at some point, you likely have metals in your body that's causing you anxiety. You may also have gotten metal poisoning from eating lots of fish and a few other things, but it's important that you get tested. If you find that this is the case you'll be amazed at how much your anxiety goes away as you start to chelate (remove) them from your body.