Addison's disease is a condition that makes people feel very weak and tired. Learn more about its symptoms, causes, diagnosis and treatment.
Adrenal fatigue is a term used to explain tiredness and sleep problems. Find out about the symptoms of adrenal fatigue and how to treat it.
Find out about your adrenal glands, which sit on top of your kidneys and make several important hormones, including adrenaline and cortisol.
The role of cortisol in the body
Cortisol is a stress hormone with many important functions. Find out what happens if you have too little or excess cortisol and about corticosteroid drugs.