Whilst occasional anxiety is normal, feeling anxious without reason is not. Persistent worrying thoughts that affect your day-to-day life may indicate you suffer from a generalized anxiety disorder. Symptoms may include irritability, impatience, restlessness, feeling tense or on edge or poor concentration. If your physical health is affected, stress may produce symptoms such as headaches, muscle tension, jaw pain, difficulty falling or staying asleep (insomnia), dry mouth, fatigue, chest tightness, indigestion, bloating and excessive sweating. Certain nutritional deficiencies can cause severe anxiety. Herbal medicine, nutritional supplementation, dietary and lifestyle approaches can treat this condition naturally, without the use of pharmacological drugs.