You've probably heard cortisol described as "the stress hormone" — and while that's not wrong, it's a bit of an oversimplification. Cortisol is produced by the adrenal glands and plays a vital role in many of the body's everyday functions: regulating blood sugar, managing inflammation, controlling the sleep-wake cycle, and yes, helping you respond to stress.
The issue isn't cortisol itself. The issue is when it's chronically elevated — when the stress response is switched on more than it's switched off.
What Causes High Cortisol?
Cortisol levels naturally rise and fall throughout the day — highest in the morning to help you wake and get going, and lower in the evening to allow for sleep. This is your cortisol rhythm, and it's a healthy, normal pattern.
Problems arise when stress — physical, emotional or environmental — keeps cortisol elevated beyond its useful window. Common drivers include:
- Chronic work or relationship stress
- Poor or insufficient sleep
- Over-exercising or under-recovering
- Blood sugar dysregulation (especially from a high-sugar diet)
- Caffeine overconsumption
- Underlying health conditions affecting the adrenal glands
Signs Your Cortisol May Be Elevated
Because cortisol affects so many systems in the body, the signs of chronically high cortisol can be wide-ranging:
- Difficulty falling asleep or waking in the early hours
- Feeling "wired but tired" — exhausted but unable to switch off
- Weight gain, particularly around the abdomen
- Increased appetite or cravings for sweet or salty foods
- Anxiety, irritability or a low stress threshold
- Frequent illness (cortisol suppresses immune function over time)
- Brain fog and poor concentration
- Low libido
- Irregular menstrual cycles
If several of these resonate, it's worth speaking with your GP. Cortisol levels can be tested through blood, urine or saliva tests, depending on what your doctor recommends.
Natural Approaches That Many People Find Helpful
While significant cortisol imbalance warrants professional support, there are lifestyle approaches that many people find genuinely useful for supporting a healthy stress response.
Prioritise Sleep
Cortisol and sleep have a bidirectional relationship — high cortisol disrupts sleep, and poor sleep raises cortisol. Breaking this cycle starts with sleep hygiene: consistent sleep and wake times, a dark and cool bedroom, no screens in the hour before bed, and limiting alcohol, which fragments sleep even when it feels relaxing.
Manage Blood Sugar
Cortisol spikes when blood sugar drops — another reason to avoid skipping meals or relying on sugary snacks for energy. Eating regular meals built around protein, healthy fats and complex carbohydrates helps keep blood sugar (and therefore cortisol) more stable throughout the day.
Move Your Body — Thoughtfully
Exercise is one of the most effective tools for managing the stress response, but intensity matters. High-intensity exercise does temporarily raise cortisol. For people who are already running on empty, gentler movement — walking, yoga, swimming — may be more supportive than adding another intense training session to an already overloaded system.
Mindfulness and Breathwork
Slow, diaphragmatic breathing activates the parasympathetic nervous system — the body's "rest and digest" mode — and may help lower cortisol in the short term. Even a few minutes of intentional breathing or meditation daily is something many people find makes a noticeable difference over time.
Reduce Caffeine
Caffeine stimulates cortisol production. If you're sensitive to stress or experiencing some of the symptoms above, reviewing your caffeine intake — particularly anything consumed after midday — is a useful place to start.
Review Your Adaptogenic Support
Certain herbs have been used for centuries in traditional medicine to support the body's stress response. Ashwagandha, rhodiola and holy basil are among the most studied, and many people incorporate these as part of a broader approach to stress management. As with any supplement, speak with your healthcare provider first, particularly if you have existing health conditions or take medication.
Supporting Your Stress Response Naturally
If you're looking for a convenient way to incorporate adaptogenic and calming herbs into your daily routine, The Patch Remedy's Happy patch is a topical patch designed to complement a healthy lifestyle and stress management approach. It's worn on the skin and designed for easy, everyday use.
For those finding that stress is affecting their sleep, our Sleep patch may also be worth exploring as part of a broader wind-down routine.
