Feeling tired but unable to switch off, sleeping badly or noticing changes in your mood or weight can make you wonder whether cortisol is involved.
It is a common concern. Cortisol is often described as the “stress hormone”, but that description only tells part of the story.
Your body needs cortisol every day. It helps regulate blood pressure, metabolism, inflammation and the way you respond to physical and emotional demands. Cortisol naturally rises and falls throughout the day.
The issue is not cortisol itself. What matters is whether cortisol levels remain unusually high for a prolonged period, whether there is a medical reason behind it and whether the body is getting enough opportunity to recover.
Understanding that difference can help you recognise possible high cortisol symptoms without assuming that every period of stress means something is wrong hormonally.

What is cortisol?
Cortisol is produced by the adrenal glands, which sit above the kidneys.
Its release follows a natural rhythm. Levels are usually higher around the time you wake and gradually fall as evening approaches. This pattern supports alertness during the day and prepares the body for rest at night.
Cortisol also rises temporarily when the body needs to respond to a challenge. That might be an intense day at work, an illness, strenuous exercise or a difficult emotional situation.
This temporary increase is normal.
Persistent cortisol excess is different and can sometimes be related to medication or an underlying medical condition.
What are the symptoms of high cortisol?
There is no single symptom that confirms high cortisol.
Many of the signs associated with elevated cortisol can also occur with anxiety, menopause, poor sleep, burnout, thyroid problems or other health conditions.
The pattern and persistence of symptoms matter more than any one sign.
Changes in weight and body composition
Long-term cortisol excess can influence how fat is distributed around the body.
In conditions such as Cushing’s syndrome, people may notice more fat around the abdomen, chest, upper back and face, while the arms and legs may appear comparatively slimmer.
This is not the same as the popular idea of “cortisol belly”.
Abdominal weight gain alone does not prove that cortisol is high. Sleep, nutrition, activity levels, age, hormones, medication and genetics can all influence body weight.
Poor sleep and daytime fatigue
Stress and sleep are closely connected.
Some people feel exhausted during the day but find it difficult to relax when they finally go to bed. Others wake frequently or feel unrefreshed in the morning.
Poor sleep can affect the body’s natural cortisol rhythm, while prolonged stress can make restful sleep harder to achieve.
If sleep has become a recurring problem, our guide to improving sleep quality explores practical ways to support deeper rest.
Mood and concentration changes
Periods of prolonged stress can make everyday demands feel heavier.
You may become more irritable, find it harder to concentrate or notice that small problems require more emotional effort than before.
Persistently elevated cortisol can be associated with changes in mood and cognition, although these symptoms have many possible causes.
If you feel that your resilience has changed significantly, it is worth looking at your overall health rather than focusing on cortisol alone.
Muscle weakness
Significant cortisol excess can affect muscle strength, particularly around the thighs, hips and shoulders.
You may notice that climbing stairs, getting up from a chair or carrying everyday objects feels more difficult.
Persistent muscle weakness should be discussed with a healthcare professional, especially if other unusual physical changes are present.
Skin changes
High cortisol associated with Cushing’s syndrome can lead to thinner skin, easy bruising, slower wound healing or broad reddish or purple stretch marks.
These symptoms are more meaningful when several appear together.
A single bruise, stretch mark or skin change is not enough to suggest a cortisol disorder.
Hormonal and menstrual changes
Cortisol can interact with reproductive hormones.
Some women may experience changes in their menstrual cycle, while both women and men may notice changes in libido.
Stress, perimenopause and other hormonal changes can produce similar symptoms, which is why context matters.
What causes high cortisol levels?
Cortisol can rise for many reasons, but a temporary increase is not the same as persistently high cortisol.
Prolonged physical or emotional stress
Work pressure, caring responsibilities, financial uncertainty, grief, lack of sleep and ongoing emotional strain can keep the body in a heightened state of alert.
This does not mean that stress automatically causes a medical cortisol disorder.
It does mean that prolonged pressure can affect sleep, energy, appetite and emotional wellbeing.
Sometimes the more useful question is not “How do I get rid of cortisol?” but “What is stopping my body from recovering?”
Corticosteroid medication
Long-term or high-dose corticosteroid treatment can increase cortisol activity in the body and may cause Cushing’s syndrome.
These medicines are used for many important medical conditions.
If you take prescribed steroids, never stop or reduce them without medical guidance.
Cushing’s syndrome
Cushing’s syndrome develops when the body is exposed to too much cortisol for a prolonged period.
It may be caused by medication or, less commonly, by problems affecting the pituitary or adrenal glands.
It is important not to confuse this condition with everyday stress.
Diagnosis requires medical assessment and appropriate testing.
How do you know if cortisol is high?
Symptoms cannot confirm whether your cortisol levels are elevated.
If a doctor suspects excessive cortisol production, they may recommend specific tests depending on your symptoms and medical history.
These can include:
- a late-night salivary cortisol test
- a 24-hour urine cortisol test
- a dexamethasone suppression test
Cortisol changes naturally throughout the day, so timing and clinical context matter.
Home tests can provide numbers, but those numbers are not always easy to interpret without professional guidance.
If symptoms are persistent, unusual or worsening, a GP can decide whether further investigation is needed.
How to lower cortisol naturally
If high cortisol is caused by a medical condition, lifestyle changes are not a substitute for treatment.
For people dealing with ongoing stress, however, certain habits can support a healthier stress response and improve recovery.
Protect your sleep rhythm
Consistent sleep and waking times can help reinforce the body’s natural daily rhythm.
Try to make the final part of the evening feel different from the rest of the day. Reduce stimulation, avoid working in bed and give yourself some distance from screens.
The goal is not to create the perfect bedtime routine.
It is to give your body a reliable signal that the day is ending.
Move without overloading the body
Regular movement can support sleep, mood and stress management.
More is not always better.
If you are already exhausted or sleeping poorly, relentless high-intensity training may add another layer of physical stress.
Walking, swimming, strength work, mobility exercises and yoga can all be useful when adapted to your current energy and fitness.
Our guide to yoga on the beach explores how movement, breathing and the natural environment can work together to create a calmer experience.
Eat for steady energy
No single food will “lower cortisol”.
A more useful approach is to eat regularly and build meals around foods that support stable energy and overall health.
A Mediterranean-style diet naturally includes vegetables, fruit, pulses, whole grains, olive oil, nuts, fish and quality sources of protein.
At Palasiet, healthy eating is not about restriction. It is about creating habits that nourish the body and are realistic enough to continue at home.
Create genuine moments of rest
Rest is not simply stopping physical activity.
You can be sitting still while your mind remains completely occupied by messages, work, news and tomorrow’s responsibilities.
Real recovery often requires periods with less stimulation.
A quiet walk, time outdoors, slow breathing, reading or sitting near the sea without trying to achieve anything can help create that space.
Our article on slow living and restorative wellbeing looks more closely at why slowing down can support long-term health.
Recognise when stress has become exhaustion
Sometimes rest alone is not enough.
If you remain tired after sleeping, struggle to concentrate or feel emotionally detached from things that once mattered to you, stress may have progressed towards burnout.
Burnout and high cortisol are not the same condition, but they can share symptoms such as fatigue, poor sleep and reduced resilience.
You can read more about our approach to recovering from burnout.
Can thalassotherapy support stress recovery?
Thalassotherapy is not a treatment for high cortisol.
At Palasiet, it forms part of a broader approach to recovery that combines seawater therapies with movement, nutrition, emotional wellbeing and professional guidance.
Warm seawater and buoyancy can help the body relax physically, reduce the sense of effort during movement and create a calmer environment in which to slow down.
The setting matters too.
Changing pace and stepping away from the routines that keep us constantly available can make it easier to reconnect with sleep, movement and healthier daily rhythms.
For guests who feel that stress has been accumulating for too long, our Anti-Stress & Relaxation programme brings these areas together within a personalised stay.
The aim is not to escape everyday life.
It is to return to it with more energy, perspective and practical ways to care for yourself.
When should you speak to a GP?
Speak to a GP if symptoms persist, worsen or appear together in an unusual pattern.
Medical advice is particularly important if you experience:
- unexplained muscle weakness
- easy bruising
- broad purple stretch marks
- significant changes in body composition
- high blood pressure
- changes in blood sugar
- symptoms while taking corticosteroid medication
Never stop prescribed steroids without professional guidance.
Persistent anxiety, exhaustion or sleep problems also deserve attention, even if cortisol is not the cause.
A healthier way to think about cortisol
Cortisol is part of a normal, intelligent stress response.
The goal is not to eliminate it.
What matters is giving the body enough opportunity to move from activity back towards rest.
That may mean sleeping more consistently, moving differently, eating well, creating quieter moments or asking for professional support.
Sometimes symptoms need medical investigation.
Sometimes the first step is simply recognising that your body has been carrying too much for too long.
Listening to that signal is already part of recovery.
FAQs about high cortisol
What are the first signs of high cortisol?
There is no single early sign. Possible symptoms include changes in body composition, muscle weakness, easy bruising, mood changes and high blood pressure. Fatigue and poor sleep are also common but have many possible causes.
How can I lower cortisol naturally?
Consistent sleep, regular movement, adequate recovery, balanced nutrition and stress-management practices can support a healthier stress response. Medical causes of high cortisol require professional treatment.
Does high cortisol cause belly fat?
Persistent cortisol excess can affect fat distribution, particularly in Cushing’s syndrome. Abdominal weight gain alone does not mean cortisol is high.
Can stress cause high cortisol?
Stress naturally raises cortisol for short periods. Prolonged stress can affect the body’s stress response and daily cortisol rhythm, but this is not the same as a diagnosed cortisol disorder.