Adrenal fatigue is a term used to describe a collection of nonspecific symptoms such as body aches, fatigue, nervousness, sleep disturbances, and digestive issues. While not an officially recognized medical diagnosis, some health practitioners believe it stems from chronic stress exhausting the adrenal glands. The adrenals are two small glands that sit atop the kidneys and secrete over 50 hormones, including cortisol and adrenaline. These hormones help regulate metabolism, immune function, blood pressure, and the body's stress response. What causes adrenal fatigue? Proponents argue factors like inadequate sleep, poor diet, emotional stress, infection, and overtraining can overwork the adrenals over time. This leads to impaired hormone production and widespread symptoms. However, an underlying adrenal disorder like Addison's disease may also be to blame in some cases. Blood tests from an endocrinologist can help determine if the adrenals are functioning properly. What are the symptoms of adrenal fatigue? Common symptoms include: