Cortisol is the talk of the internet but doctors say most people don't need to worry about it. Levels of what is known as the stress hormone naturally rise and fall throughout the day. Cortisol disorders are serious, but they are rare and hard to diagnose. Doctors advise people not take matters into their own hands by taking unproven supplements or ordering their own tests. Instead, they recommend talking to a doctor and taking simple steps to manage stress.
