Cortisol Face: What It Is and What Actually Causes It

What cortisol is

Cortisol is a hormone made by the adrenal glands, which sit on top of the kidneys. It helps control blood sugar, blood pressure, inflammation and the sleep-wake cycle. It follows a daily rhythm: highest shortly after waking, lowest around midnight. It rises for short periods with stress, exercise and illness, then returns to baseline. That rise is normal and useful.

What doctors mean by moon face

Moon face is a marked rounding of the face caused by fat building up at the sides of the face, to the point that the ears can be hard to see from the front. It develops over months. It happens when cortisol, or a medication that acts like cortisol, stays very high for a long time.

It has two causes:

1. Corticosteroid medication. This is by far the most common cause. Prednisone, dexamethasone and similar drugs, taken by mouth for weeks to months for conditions such as asthma, rheumatoid arthritis, lupus or inflammatory bowel disease, commonly cause it. High-dose steroid inhalers, injections and creams can contribute. The roundness fades gradually after the dose is reduced.

Never stop a steroid medication suddenly. Long-term use switches off the body's own cortisol production, and stopping abruptly can be dangerous. Any change must be planned with the prescribing doctor.

2. Cushing's syndrome. The body itself makes too much cortisol, usually because of a small benign tumor in the pituitary gland or an adrenal gland. It is uncommon, with estimates of roughly 10 to 15 new cases per million people a year.

Can everyday stress cause it?

No. Work stress, poor sleep and a hard month raise cortisol in short bursts within the normal range. That is far below the sustained levels seen in Cushing's syndrome or with steroid treatment, and it does not redistribute fat to the face. No study has shown that ordinary psychological stress causes moon face.

Long-term stress does affect health in other ways. It disrupts sleep, drives overeating and drinking, and is linked to weight gain around the waist. Those can change how your face looks. The route is through sleep, salt, alcohol and weight, and not through a cortisol effect on the face.

What usually causes a puffy face

• Salt. A salty dinner holds water overnight.
• Alcohol. It causes fluid shifts and widens blood vessels in the face.
• Short or poor sleep.
• Sleeping flat or face down, which lets fluid settle in the face.
• Allergies and sinus congestion.
• Weight gain. The face is one of the first places it shows.
• The menstrual cycle. Fluid retention in the days before a period.
• An underactive thyroid. It causes a puffy face, often with puffiness around the eyes, along with tiredness, weight gain and feeling cold.
• Kidney problems. Swelling around the eyes in the morning can be an early sign.
• Medications, including some for blood pressure and diabetes, as well as steroids.
• Pregnancy.

Puffiness that is worse in the morning and improves through the day is almost always fluid. Moon face does not change through the day.

Urgent: sudden swelling of the face, lips or tongue, especially with trouble breathing, is an emergency. Call 911.

Signs that point to Cushing's syndrome

A round face alone is not enough. Doctors look for a combination, and for features that are unusual in ordinary weight gain:

• Weight gain in the trunk while the arms and legs stay thin
• A pad of fat between the shoulders or above the collarbones
• Wide purple or red stretch marks on the abdomen, thighs or arms
• Skin that bruises easily and heals slowly
• Muscle weakness in the hips and shoulders, such as difficulty rising from a chair or climbing stairs
• New high blood pressure or high blood sugar
• Irregular or absent periods; new facial hair in women
• Bone thinning or fractures at a young age
• Mood changes, including depression and irritability

Easy bruising, muscle weakness and wide purple stretch marks are the features that best separate Cushing's syndrome from simple weight gain. Anyone with several of these should see their doctor or an endocrinologist.

How cortisol is properly tested

Because cortisol changes through the day, a single blood test at a random time cannot diagnose or rule out Cushing's syndrome. The Endocrine Society recommends starting with one of three tests:

• Late-night salivary cortisol. Saliva collected at home at bedtime, usually on two nights. Cortisol should be at its lowest then.
• 24-hour urine free cortisol. All urine collected over a full day, usually twice.
• Overnight dexamethasone suppression test. A small tablet at night and a blood draw the next morning. In a healthy person, morning cortisol drops.

Two abnormal results are normally needed before further testing. Birth control pills, heavy drinking, depression, severe obesity and night-shift work can all affect results, so the tests have to be interpreted by a clinician.

A morning blood cortisol is useful for a different question: whether the adrenal glands are making too little.

What does not help

• "Cortisol detox" supplements and drinks. None has been shown to lower cortisol in a way that changes the face.
• "Adrenal fatigue." The Endocrine Society does not recognize it as a medical condition. The symptoms are real and deserve a proper workup for other causes.
• Facial massage and rollers. They move fluid for an hour or so. They do not affect fat or hormones.

What helps ordinary puffiness

• Less salt, particularly in the evening
• Less alcohol
• Seven or more hours of sleep, with the head slightly raised
• A cool compress in the morning
• Treating allergies
• Regular exercise, which also brings baseline stress levels down
• Losing weight if weight has gone up

Where Zen IV Spa fits

If your face has changed along with your energy, weight or cycle, testing is more useful than guessing. Our hormone panels include thyroid and cortisol, and a blood draw at home can also check blood sugar and kidney function. A licensed nurse comes to you anywhere in New York & New Jersey, and a licensed provider reviews the results on video and tells you whether you need to see an endocrinologist. Our medical director oversees every treatment.

Quick answers

Is cortisol face real? Moon face is a real medical sign. It comes from long-term steroid medication or Cushing's syndrome, not from everyday stress.

Can stress make my face puffy? Indirectly, through poor sleep, more salt, alcohol and weight gain.

How do I know if it is Cushing's syndrome? Look for a group of signs: easy bruising, wide purple stretch marks, muscle weakness, and weight gain in the trunk. See a doctor if you have several.

Can a blood test check my cortisol? A single blood test cannot diagnose Cushing's syndrome. Late-night saliva, 24-hour urine or a dexamethasone suppression test are used.

Will moon face from prednisone go away? Usually, gradually, after the dose comes down. Never change the dose without your doctor.

Do cortisol-lowering supplements work? There is no good evidence that they change facial appearance.

Face changed along with your energy or weight? Check thyroid and hormones at home: zenivspa.com/labs-testing/.

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