High cortisol levels: symptoms and treatment options

Pharmacist Dirk | Founder Metis Supplements
Last updated: 06 May 2026

Key Facts

  1. An elevated cortisol level manifests as fatigue, sleep problems, abdominal fat, irritability, and concentration problems
  2. Chronic stress keeps your HPA axis continuously active, preventing cortisol from naturally decreasing
  3. Lifestyle forms the foundation, but ashwagandha KSM-66® and magnesium bisglycinate can specifically support your stress system

In our busy and stressful society, it is essential to understand how stress affects our health. One of the most important hormones involved in our response to stress is cortisol. This hormone is crucial for various bodily functions, but chronically elevated cortisol levels can lead to serious health problems.

What is cortisol?

Cortisol is a hormone produced in the adrenal glands, located on top of the kidneys. It plays a crucial role in regulating various bodily functions, including metabolism, the immune system, blood pressure, and the response to stress. It is often called the "stress hormone" because it is released during stressful situations to prepare the body for a fight-or-flight response.

Why is cortisol important?

Cortisol helps with:

  • Regulating blood sugar levels: It ensures that sufficient glucose is available for energy.
  • Suppressing inflammation: It helps regulate the immune system to prevent excessive inflammation.
  • Regulating blood pressure: It contributes to maintaining stable blood pressure.
  • Promoting energy release: It ensures the body obtains energy from fats and proteins.

Cortisol also plays a role in the sleep-wake cycle, memory, and mood.

Daily fluctuations in cortisol

Cortisol levels vary throughout the day. The highest levels are usually in the morning and decrease during the day. This pattern is called the circadian rhythm. Variations in cortisol levels can occur in response to stress, illness, prolonged fatigue, or other factors.

How do you recognise high cortisol levels?

Elevated cortisol levels can lead to various physical and psychological symptoms. These symptoms often indicate that the body is under stress and that there is an imbalance in the hormonal system.

Why am I so tired?

Elevated cortisol levels can cause persistent fatigue and sleep problems. This can manifest as difficulty with falling asleep, staying asleep, or experiencing restless sleep. The constant feeling of fatigue can affect daily functioning and reduce quality of life.

It is important to understand that cortisol influences the circadian rhythm, which regulates our sleep-wake pattern. With normal cortisol levels, the level peaks in the early morning hours to wake us up and gradually decreases throughout the day, allowing us to relax and sleep in the evening. Elevated cortisol levels disrupt this rhythm, which can lead to insomnia and a lack of refreshing sleep.


Why am I gaining weight for no reason?

Cortisol is involved in fat storage, particularly around the abdominal area. People with elevated cortisol levels may find it difficult to lose weight, despite diet and exercise efforts. Appetite can also change, leading to overeating or cravings for high-calorie foods.

High cortisol levels can lead to insulin resistance, meaning cells respond less effectively to insulin and more glucose remains in the blood. This can contribute to weight gain and fat storage, especially in the abdominal area. Additionally, people with elevated cortisol levels may experience increased cravings for sugary and fatty foods, further exacerbating weight gain.

Why is my blood pressure so high?

Elevated cortisol levels can lead to high blood pressure through the narrowing of blood vessels and the retention of sodium and water. This can contribute to cardiovascular diseases, such as atherosclerosis, heart attacks, and strokes.

Cortisol stimulates the kidneys to retain more sodium, leading to an increase in blood pressure. Furthermore, chronic stress, accompanied by elevated cortisol levels, can lead to inflammation and damage to blood vessels, increasing the risk of cardiovascular disease. It is therefore essential to monitor blood pressure regularly and implement healthy lifestyle changes to reduce the risk of serious complications.

How do I feel mentally?

Why do I feel so anxious and depressed?

High cortisol levels can contribute to anxiety and depression. Cortisol can disrupt the balance of neurotransmitters, affecting mood and emotional well-being. People with high cortisol levels often feel anxious, irritable, and low in mood.

Chronic stress and elevated cortisol levels can lead to changes in the brain areas involved in mood and emotions. This can result in an increased risk of anxiety disorders and depression. It is important to reduce stress and develop healthy coping mechanisms to protect mental health.

Why can't I concentrate?

Prolonged stress and high cortisol levels can affect brain structures involved in memory and cognitive functions. This can lead to problems with concentration, memory, and clear thinking.

Cortisol can damage the hippocampus, a brain region essential for memory. This can lead to problems with storing new memories and retrieving old ones. It can also become more difficult to concentrate on tasks and think clearly, negatively affecting daily functioning and productivity.

Why am I so irritable?

Elevated cortisol levels can lead to irritability, agitation, and impatience. People may notice they experience less pleasure, have difficulty relaxing, and feel stressed more often.

High cortisol levels can disrupt the balance of neurotransmitters such as serotonin and dopamine, leading to mood swings and behavioural changes. It is important to integrate stress-reducing techniques into daily life to minimise these effects.

What causes elevated levels?

Elevated cortisol levels can have various causes, including stress, lifestyle factors, medical conditions, and medications.

Why is stress so harmful?

Prolonged stress is a common cause of elevated cortisol levels. Work pressure, financial problems, relationship difficulties, and traumatic events can all contribute to increased cortisol production. Lack of sleep, unhealthy diet, insufficient exercise, and excessive alcohol and caffeine consumption can also contribute to elevated cortisol levels.

It is important to understand that stress does not only come from external factors such as work or relationships, but also from internal factors such as perfectionism and fear of the unknown. By identifying stress factors and developing effective coping strategies, one can reduce the negative impact of stress on the body.


Could a medical condition be the cause?

Some medical conditions, such as Cushing's disease, in which the adrenal glands produce too much cortisol, can lead to elevated cortisol levels. Certain tumours can also produce cortisol. Additionally, medications such as corticosteroids can raise cortisol levels.

It is important to identify and treat medical conditions that may contribute to elevated cortisol levels. Regular medical check-ups and discussing symptoms with a healthcare provider can help with early detection of these conditions.

How do I know if my cortisol level is too high?

Diagnostic tests

The diagnosis of elevated cortisol levels is established through diagnostic tests. Doctors can perform saliva and blood tests to measure cortisol levels. Imaging studies, such as MRI or CT scans, can be used to detect any tumours causing the increased cortisol production.

Saliva tests are often convenient because they can be performed multiple times a day to assess the circadian rhythm of cortisol. Blood tests can provide an accurate measurement of both free cortisol and total cortisol levels. These tests can help establish a diagnosis and determine the appropriate treatment.

Treatment options and lifestyle changes

Treatment of elevated cortisol levels depends on the underlying cause.

What can I do myself?

  • Stress management: Applying relaxation techniques such as yoga, meditation, and breathing exercises can help reduce stress and normalise cortisol levels.
  • Adequate sleep: A good night's rest is essential for regulating cortisol. Creating a calming sleep environment and following a consistent sleep schedule are important.
  • Healthy diet: Avoiding stimulants such as caffeine and consuming a balanced diet with sufficient nutrients can help regulate cortisol.
  • Supplements: Natural compounds such as ashwagandha or magnesium can help regulate your cortisol levels. Read more about lowering cortisol with supplements in this article.

Would you like to naturally regulate your cortisol? Metis Anti-Stress 03 combines both ingredients in one formula, developed by Belgian pharmacists.

Frequently Asked Questions

De meest voorkomende symptomen zijn aanhoudende vermoeidheid, slaapproblemen, onverklaarbare gewichtstoename (vooral rond de buik), hoge bloeddruk, angst, prikkelbaarheid en concentratieproblemen.
Een arts kan je cortisolniveau meten via een speeksel-, bloed- of urinetest. Speekseltests worden vaak meerdere keren per dag afgenomen om het dagritme van cortisol te beoordelen.
Chronische stress is de meest voorkomende oorzaak. Andere oorzaken zijn slaaptekort, overmatig cafeïne- of alcoholgebruik, en medische aandoeningen zoals de ziekte van Cushing.
Ja, door stressmanagement (meditatie, yoga), voldoende slaap, regelmatige beweging en een gezond voedingspatroon. Supplementen zoals ashwagandha en magnesium kunnen ook ondersteunen.
Chronisch verhoogd cortisol kan bijdragen aan hart- en vaatziekten, insulineresistentie, botontkalking en een verzwakt immuunsysteem. Het is belangrijk om de oorzaak aan te pakken.
Cortisol volgt een circadiaans ritme: hoog 's ochtends, laag 's avonds. Bij chronische stress blijft cortisol 's avonds hoog, wat het inslapen bemoeilijkt en de slaapkwaliteit verlaagt.
Metis Anti-Stress 03

Do you recognize these symptoms? Anti-Stress 03 helps regulate your cortisol

Ontdek Metis Anti-Stress 03

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