cortisol

Definition

A steroid hormone produced by the adrenal glands that is released in response to stress and low blood-glucose concentration, often called the 'stress hormone.'

Etymology

Derived from the Latin 'cortex' (meaning bark or outer layer, referring to the adrenal cortex) and the chemical suffix '-ol' indicating it is an alcohol or steroid compound.

In the news

The article warns that intense cardio before bed increases cortisol levels, which can disrupt sleep patterns and negatively impact physical recovery.

Psychologists say the secret to better health isn't doing more — it's doing less, in the right order

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