“Cortisol face” is a popular social media fad that adds to the growing misunderstanding of cortisol physiology. Like many viral health trends, it contains a skerrick of truth mixed in with a lot of misinformation.
The claim is that high cortisol causes a puffy, round face. This is often followed by advice—sometimes accompanied by a supplement being sold—on how to “lower cortisol,” along with incorrect explanations of adrenal gland function.
What Does Cortisol Actually Do?
Cortisol is a hormone produced by the adrenal glands. It helps maintain blood pressure and can cause fluid retention. When we’re under psychological or physical stress—including sleep deprivation—cortisol rises. This is a normal physiological response, not a sign of adrenal dysfunction. In fact, we rely on this response to survive. If our adrenal glands couldn’t do this, we’d be in serious trouble.
When Is Cortisol Actually Too High?
Excess cortisol due to a tumour (either adrenal or pituitary) causes a condition called Cushing’s syndrome, which leads to a range of health complications. One of the hallmark signs is a puffy or “moon face.” This is very different from the temporary rise in cortisol that occurs when we’re stressed or sleep-deprived.
There’s also a condition called Pseudo-Cushing’s, where someone has signs and symptoms of high cortisol, and even elevated levels on blood or urine tests. This can occur in:
- Depression
- Alcoholism
- Chronic high-intensity exercise
- Obesity
- Anorexia
To distinguish Pseudo-Cushing’s from true Cushing’s, we use a midnight salivary cortisol test. In these cases, the adrenal glands are functioning normally—it’s the underlying behaviour or condition that’s driving the elevated cortisol.
So, Is “Cortisol Face” a Real Thing?
If you’re constantly stressed, never taking downtime, and not sleeping well, then yes—you might have a puffier-than-usual face. Any doctor after a week of night shifts can relate. Cortisol could be a minor contributor, but it’s the underlying behaviour that’s the main driver—and also the reason cortisol is elevated.
You don’t need to test your cortisol levels or take “adrenal supplements.” What you need is to focus on lifestyle changes that support recovery and stress management.