Is Your Cortisol Low? Signs, Causes & When a Cortisol Test Can Help
You’re exhausted — not the kind of tired that a good night’s sleep fixes. You feel foggy, unmotivated, and somehow wired and depleted at the same time. You might have already Googled your symptoms and stumbled across the word “cortisol.” But here’s what most articles don’t tell you: the problem isn’t always that cortisol levels are high. For a significant number of people, the issue is the opposite — cortisol is low, and that’s just as disruptive to your health.
What cortisol actually does
Cortisol is your body’s primary stress hormone, produced by the adrenal glands sitting just above your kidneys. It regulates energy, controls inflammation, manages blood sugar, and governs your sleep-wake cycle. Think of it as the body’s internal alarm system — it rises in the morning to wake you up and tapers off at night to let you sleep.
When cortisol hormone levels are functioning normally, this rhythm runs quietly in the background. When it breaks down — in either direction — the effects touch almost every system in the body.
Signs that cortisol is low
Low cortisol — clinically known as adrenal insufficiency or hypocortisolism — is less talked about than high cortisol, but its symptoms are just as hard to live with. Common signs include:
- Persistent fatigue that doesn’t improve with rest
- Low blood pressure or dizziness when standing
- Salt cravings and unexplained weight loss
- Muscle weakness or general body aches
- Brain fog and difficulty concentrating
- Low mood, anxiety, or a flat emotional state
- Nausea, poor appetite, or digestive discomfort
These symptoms are easy to dismiss as burnout or general stress — which is exactly why low cortisol often goes undiagnosed for months or years.
What causes low cortisol levels?
Cortisol levels can drop for several reasons. The most common include:
Adrenal insufficiency (Addison’s disease) — the adrenal glands don’t produce enough cortisol, either due to autoimmune damage, infection, or injury.
Secondary adrenal insufficiency — the pituitary gland fails to signal the adrenal glands correctly, often due to a tumour, surgery, or head trauma.
Long-term corticosteroid use — prolonged use of steroid medications (for asthma, arthritis, or inflammatory conditions) can suppress the body’s natural cortisol production over time.
Chronic stress burnout — while acute stress temporarily raises cortisol, long-term unmanaged stress can eventually exhaust the adrenal response, leading to consistently low output.
When cortisol levels are high — the other side
It’s worth noting that for many people, the opposite problem exists. When cortisol levels are high over extended periods — often driven by chronic stress, poor sleep, or an underlying condition like Cushing’s syndrome — the effects are equally damaging: weight gain around the abdomen, high blood pressure, impaired immunity, and blood sugar dysregulation. A single cortisol test can clarify which direction the imbalance lies.
When should you consider a cortisol test?
If you’ve been experiencing several of the symptoms above for more than a few weeks — particularly unexplained fatigue, low blood pressure, and salt cravings together — it’s worth investigating your cortisol hormone levels properly rather than guessing.
A cortisol test is a straightforward blood test, typically taken in the morning when cortisol naturally peaks. This timing matters: a reading taken at the wrong time of day can produce a misleading result, which is why a brief doctor consultation beforehand helps ensure the test is interpreted in context.
At Lotus Azure, cortisol testing is available as a standalone test or as part of a broader hormonal health screening. Results are processed in our in-house laboratory, with same-day reporting available.
If your body has been sending you signals it can’t manage the load — it may be time to listen. Book your cortisol test today.
For more information, contact:
The Lotus Azure Clinic
☎️ Tel: 02-117-1801
💚 Line: https://line.me/ti/p/~thelotusazure
💬 Website: https://thelotusazure.com/
📍 Address: 89 Surin Building, 2nd Floor, Soi Wat Thong Thammachart, Chiang Mai Road, Khlong San, Bangkok 10600, Thailand
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