How to lower cortisol levels: what really works?

• Morning (6-10 AM): ~172–497 nmol/L

• Afternoon (4-8 PM): ~74–286 nmol/L
  

Cortisol norms vary, so there isn't one universal limit that applies to everyone. The values depend on how the test is performed and the measurement standards applied by each laboratory. Therefore, it is always best to interpret your results according to the norms provided by the specific laboratory. Cortisol norms can be determined by:

• laboratory methodologies,

• type of analysis (blood or saliva),

• units of measurement,

• individual physiological differences.

There are several key factors that can cause cortisol levels to rise in the body. Understanding these is important because chronically elevated cortisol negatively impacts well-being, energy balance, and cognitive functions.

Constant psychological tension forces the body to continuously produce stress hormones, which in the long run maintains high cortisol levels. Chronic stress can arise from many factors – from constant pace and tension to emotional, social, or financial worries. Prolonged release of stress hormones suppresses the immune system, disrupts sleep cycles, and increases the risk of depression and anxiety disorders.

Insufficient or poor quality rest disrupts the natural daily rhythm of cortisol. When there is a lack of sleep, cortisol levels remain too high in the morning, causing us to feel tired and find it harder to concentrate. In the evening, it can also drop too slowly, making it harder to relax. It becomes a vicious cycle. Also, scientific studies conducted on healthy adults have shown that complete sleep deprivation (40 hours of wakefulness) significantly increases cortisol concentration.

Long gaps between meals or excessive sugar consumption cause sudden glucose fluctuations. The body interprets such fluctuations as a stressful situation, leading to more frequent release of stress hormones. In addition, poor nutrition can disrupt hormone synthesis, including cortisol, and affect energy levels and mood.

Coffee or energy drinks stimulate the nervous system and can maintain high cortisol for a long time. Caffeine increases the release of adrenaline and cortisol, and this continuous stimulation disrupts sleep quality, increases blood pressure, and causes feelings of anxiety.

Intense exercise without adequate rest also acts as a stressor on the body, which can lead to elevated cortisol. While regular physical activity is very beneficial, excessive or too frequent exertion causes muscle fatigue and weakening of the immune system. Adequate rest and recovery are essential for hormone levels to return to their natural daily rhythm.

The problem of high cortisol often affects people who work a lot, experience chronic stress, or frequently feel psychological tension. Others may not even notice that their hormone balance is disturbed, as the symptoms of elevated cortisol are subtle and similar to ordinary fatigue. However, our bodies are indeed very intelligent, so it is always useful to listen to the signals they send.

• Constant fatigue, even if you sleep enough.

• Disrupted sleep rhythm – feeling exhausted in the morning, difficulty relaxing in the evening.

• Over time, weight changes may occur, especially in the abdominal area, as cortisol affects fat storage and energy metabolism processes.

• Increased irritability, anxiety, or internal tension.

• Difficulty concentrating, maintaining attention, thoughts tire more quickly.

• May be harder to make decisions or stay calm in stressful situations.

Long-term elevated cortisol also affects the balance of other hormones. Often, the regulation of insulin, estrogen, testosterone, and other important hormones is disturbed, which can change:

• energy levels,

• the body's response to stress, diet, and physical exertion,

• for women – menstrual cycle,

• libido,

• muscle mass maintenance and recovery.

To maintain the body's balance and reduce stress hormone levels, it is important to pay attention to your lifestyle and diet. Proper habits help naturally regulate cortisol, maintain energy levels, good mood, and concentration throughout the day.

Sleep is the strongest regulator of cortisol. If it is irregular or too short, the body remains in "stress mode" longer, and the cortisol rhythm gets disrupted. Studies show that people who sleep less than 6 hours per night often have higher cortisol levels than those who rest 7–9 hours.

What helps:

• going to bed and waking up at the same time
• avoiding screens before bed
• getting natural light in the morning

Movement is a natural way to maintain a healthy cortisol balance. Regular movement also promotes the nervous system's resilience to stress, allowing the body to react more easily to daily challenges. However, moderation is very important here, as intense workouts without proper rest can have the opposite effect and increase cortisol levels.

What helps:

• walking, yoga, or light workouts
• regularity, not intensity
• adequate rest between exertions

Conscious breathing and meditation are among the most effective ways to reduce cortisol. Slow, deep breaths activate the parasympathetic nervous system, which is responsible for relaxation and slowing down the heart rate. These practices not only reduce tension but also improve sleep quality, concentration, and overall emotional balance.

What helps:

• slow, deep breathing
• short relaxation moments throughout the day
• meditation or mindfulness practices

Magnesium can help inhibit stress reactions in the body and regulate nervous system signals. It is essential for over 300 biochemical processes, including cortisol synthesis and neutralization. Its additional intake (especially in the evening) can improve sleep and reduce tension. Also, B vitamins (B6, B9, B12) are necessary for proper nervous system function and energy production. Such supplements for the nervous system, along with a healthy diet and lifestyle changes, work synergistically, allowing cortisol levels to stabilize naturally.

A sufficient amount of these substances can help:

• reduce tension
• improve sleep quality
• maintain stable energy levels

To make it easier to incorporate changes into your routine, here is a clear summary of the main factors influencing cortisol balance.

Lately, there has been an increasing turn to nature and its gifts as additional support for coping with the demands of modern life. Although adaptogens are not a "quick fix," some of them help improve well-being, increase stress resistance, maintain emotional balance, and support nervous system function. Some plants have official health claims, while others have extensive traditional use and scientific research showing potential benefits.

It is important to understand that most adaptogens work on several levels, so this classification is indicative.

This adaptogen is traditionally used to reduce tension and improve sleep. Clinical studies show that ashwagandha can significantly reduce morning cortisol concentration (−11% to −32% over 30-112 days). In addition to reducing cortisol, ashwagandha has been observed to improve concentration. Supplements with ashwagandha can help better cope with stress, improve sleep quality, and overall well-being. 

If your life is characterized by a high number of stressful situations, this plant can help the body adapt to tension and stress, increasing resistance to these negative factors. Studies show that Rhodiola rosea can help balance morning cortisol rise (awakening response), improve attention, and reduce fatigue. Supplements with Rhodiola are often recommended for people experiencing significant emotional or mental stress.  

This calming plant is traditionally used to support relaxation, normal sleep, and emotional balance. While there are no specific clinical studies on cortisol reduction in this case, the calming effect of lemon balm can help maintain a proper hormonal rhythm.

Valerian is a traditional calming plant used to improve sleep and reduce anxiety. It acts on the central nervous system by promoting relaxation and the natural resting process. Regular use of valerian supplements can reduce nervous tension, which helps prevent long-term cortisol elevation.

The "mushroom of immortality," Reishi, can help calm the nervous system and maintain hormonal balance. This adaptogenic mushroom can help improve sleep quality and support normal immune system activity.

A plant that helps maintain emotional balance. This is one of the few plants whose emotional effects are confirmed by official health claims. Saffron supplements can be beneficial for people whose well-being changes due to long-term stress.

Read more about the benefits of saffron and studies examining its effects in the article.

This adaptogen can help the body adapt to stress and maintain energy balance. It can also help regulate cortisol secretion, improve concentration and mental resilience, making it particularly suitable during periods of overwork or emotional fatigue.

Cordyceps can increase energy levels and stress resistance. This adaptogenic mushroom is particularly valued for its ability to improve endurance and psychological resilience, making it ideal for people experiencing chronic physical or emotional stress.

It is also worth noting other adaptogens such as Schisandra chinensis, Eleuthero, Holy Basil, Gotu Kola, and Magnolia bark extract. All of them possess properties that improve stress resistance, reduce fatigue, and contribute to maintaining optimal hormonal balance. While clinical data on their specific effects on cortisol reduction is still limited, the calming and toning effects of these adaptogens leave no doubt about their health benefits.

The stress hormone cortisol is not an enemy, but its imbalance can affect all bodily functions. Natural balance is achieved by combining daily habits, a balanced diet, and, if necessary, appropriate supplements. Incorporate simple steps into your routine – this way you can naturally maintain harmony between your body and mind. If symptoms persist despite lifestyle adjustments, it is worth consulting a doctor for further action.