How to lower cortisol: what the evidence shows

What "lowering" cortisol really means

Cortisol is the body's main glucocorticoid, released by the adrenal glands under the hypothalamic-pituitary-adrenal (HPA) axis. It follows a daily rhythm — highest in the first hour after waking, then tapering through the day — and it is essential for mobilizing glucose, regulating blood pressure, and driving the acute stress response. The problem is never cortisol itself but a rhythm that has become chronically too high, too flat, or disrupted overnight. So the sensible goal is to steady the pattern, not to crush the hormone.

The levers below are ordered by how good the evidence is, and grouped into lifestyle fundamentals, supplements with preliminary evidence, and the clinical step of ruling out a real disorder. If your interest is specifically the midlife stress spiral, see our deeper explainer on cortisol and perimenopause.

Lifestyle levers (best evidence)

These are the highest-yield changes, and most of them also help perimenopause symptoms directly.

• Protect and extend your sleep

  Strong evidence

  Sleep loss raises cortisol the following evening, and people with chronic insomnia show moderately higher cortisol on average. Because perimenopausal night sweats fragment sleep, treating them and guarding a regular sleep window is the single most direct lever most people have.

  Evidence: PubMed, PubMed

• Move regularly, including resistance training

  Moderate evidence

  A 2022 meta-analysis found regular physical activity is an effective strategy for lowering cortisol and improving sleep quality. Resistance training adds a second benefit in midlife: it helps preserve the muscle and bone that decline across the menopause transition.

  Evidence: PubMed, PubMed

• Practice mindfulness or relaxation training

  Moderate evidence

  A meta-analysis of 45 studies found mindfulness meditation reduces cortisol and other physiological stress markers. Breathing practices, yoga, and cognitive-behavioral approaches act on the same stress-regulation pathways and are low-risk to try.

  Evidence: PubMed

• Move caffeine earlier in the day

  Moderate evidence

  Caffeine stimulates cortisol secretion, and while daily drinkers develop partial tolerance the response is not eliminated. Shifting caffeine to the morning limits both the direct cortisol bump and the late-day sleep disruption that raises next-day cortisol.

  Deeper dive: foods that spike cortisol

  Evidence: PubMed

• Eat for steady blood sugar and enough magnesium

  Moderate evidence

  Low magnesium status is linked to a heightened stress response, and a protein-forward, fibre-rich pattern limits the blood-sugar swings that drive reactive cortisol. Magnesium-rich foods such as leafy greens, pumpkin seeds, and legumes are a food-first way to support HPA-axis regulation.

  Deeper dive: foods that support cortisol balance

  Evidence: NIH, PubMed

Supplements with preliminary evidence

Some supplements have early trial signals for the stress response, but the studies are mostly small, short, and industry-linked. Treat these as optional add-ons, not replacements for the fundamentals above or for medical care when a disorder is present. Discuss any supplement with a clinician, especially alongside prescription medication.

• Consider ashwagandha, with a clinician

  Preliminary evidence

  Several small randomized trials suggest standardized ashwagandha root extract reduces perceived stress and morning cortisol over roughly 8 weeks. Trials are short and often industry-funded, rare liver-injury reports exist, and it should not be combined with thyroid medication without medical advice.

  Deeper dive: ashwagandha evidence review

  Evidence: PubMed, PubMed, NIH

• Consider L-theanine

  Preliminary evidence

  L-theanine, an amino acid found in tea, has fairly consistent small-trial evidence for lowering subjective and physiological stress markers without sedation. One four-week randomized trial reported reduced stress symptoms and better sleep. Effect sizes are modest.

  Deeper dive: L-theanine evidence review

  Evidence: PubMed, PubMed

• Correct low magnesium with a supplement if needed

  Preliminary evidence

  A systematic review found magnesium supplementation can modestly reduce subjective anxiety and stress, most clearly in people who are deficient. Direct evidence that it lowers cortisol in already-replete adults is limited; the glycinate form is favored for gastrointestinal tolerability.

  Deeper dive: magnesium and cortisol review

  Evidence: PubMed, PubMed

• Consider phosphatidylserine

  Preliminary evidence

  Small randomized trials suggest phosphatidylserine can blunt the ACTH and cortisol response to acute mental or physical stress at roughly 400-800 mg per day. The trials are small and short, so durability for chronic, everyday stress remains uncertain.

  Deeper dive: phosphatidylserine evidence review

  Evidence: PubMed, PubMed

• Consider Rhodiola rosea

  Preliminary evidence

  Rhodiola rosea is an adaptogen with small trials suggesting reduced stress-related fatigue and burnout, but inconsistent effects on cortisol itself. Trial quality is mixed and extract standardization varies, so the evidence is best treated as preliminary.

  Deeper dive: rhodiola evidence review

  Evidence: PubMed, PubMed

First, rule out a true cortisol disorder

• Rule out a true cortisol disorder before self-treating

  Strong evidence

  A 2016 systematic review found no evidence that "adrenal fatigue" exists. Genuine cortisol disorders — Cushing syndrome (excess) and Addison disease (deficiency) — are diagnosed with specific validated tests, so persistent or severe symptoms deserve a proper clinical workup rather than an unvalidated at-home panel.

  Evidence: PubMed, NIH, NIH

Testing is chosen for the specific question. When low cortisol is suspected, a clinician typically starts with a morning blood cortisol; when high cortisol is suspected, options include a late-night salivary cortisol, a 24-hour urinary free cortisol, or an overnight dexamethasone suppression test. You can read more on our high cortisol and low cortisol reference pages.

Cortisol, midlife, and belly fat

Cortisol tends to rise on average across the menopausal transition, and the same period shifts fat storage toward the abdomen. If that is your main concern, our mechanism explainer on menopause belly fat covers why it happens, and our guide to foods that support cortisol balance covers the dietary answer in detail. For clinician-supervised options you can compare our editorial telehealth provider reviews and provider directory.

Frequently asked questions

How can I lower cortisol naturally?

The best-evidenced levers are lifestyle ones: protect and extend your sleep, move regularly (including resistance training), practice mindfulness or relaxation, move caffeine earlier in the day, and eat a protein-forward, fibre-rich diet with enough magnesium. These are supported by controlled trials and meta-analyses and also help perimenopause symptoms directly.

What is the fastest way to lower cortisol?

There is no instant fix. The most direct short-term lever is sleep, because sleep loss raises cortisol the next evening, so a consistent sleep window and treating night sweats pay off quickly. Single relaxation sessions can lower cortisol acutely, but durable change comes from repeated practice, not a one-off.

Do supplements actually lower cortisol?

Some have preliminary evidence. Small randomized trials suggest ashwagandha and L-theanine can reduce stress markers, and phosphatidylserine can blunt the cortisol response to acute stress. The trials are small, short, and often industry-funded, so supplements are not a substitute for sleep, exercise, and diet, and should be discussed with a clinician.

Does exercise raise or lower cortisol?

Both, on different timescales. A single hard workout raises cortisol transiently, but a 2022 meta-analysis found that regular physical activity lowers cortisol and improves sleep over time. Resistance training additionally preserves muscle and bone during the menopause transition.

When should I see a doctor about high cortisol?

See a clinician if fatigue, mood, sleep, or weight changes are persistent or worsening, and sooner for red flags such as unexplained weight loss, very low blood pressure or fainting, purple stretch marks, or muscle wasting. Genuine cortisol disorders are diagnosed with specific validated tests, not with "adrenal fatigue" panels.

Primary medical sources

1. PubMedLeproult R et al. "Sleep loss results in an elevation of cortisol levels the next evening." Sleep 1997;20(10):865-870.
2. PubMedHPA-axis activity in patients with chronic insomnia: a systematic review and meta-analysis of case-control studies. Sleep Medicine Reviews 2022.
3. PubMedDe Nys L et al. "The effects of physical activity on cortisol and sleep: a systematic review and meta-analysis." Psychoneuroendocrinology 2022;143:105843.
4. PubMedGreendale GA et al. "Changes in body composition and weight during the menopause transition." JCI Insight 2019;4(5):e124865.
5. PubMedPascoe MC et al. "Mindfulness mediates the physiological markers of stress: a systematic review and meta-analysis." J Psychiatr Res 2017;95:156-178.
6. PubMedLovallo WR et al. "Caffeine stimulation of cortisol secretion across the waking hours in relation to caffeine intake levels." Psychosom Med 2005;67(5):734-739.
7. NIHNational Institutes of Health, Office of Dietary Supplements — Magnesium fact sheet.
8. PubMedPickering G et al. "Magnesium status and stress: the vicious circle concept revisited." Nutrients 2020;12(12):3672.
9. PubMedBoyle NB et al. "The effects of magnesium supplementation on subjective anxiety and stress — a systematic review." Nutrients 2017;9(5):429.
10. PubMedChandrasekhar K et al. "A prospective, randomized study of ashwagandha in reducing stress and anxiety in adults." Indian J Psychol Med 2012;34(3):255-262.
11. PubMedSalve J et al. "Adaptogenic and anxiolytic effects of ashwagandha root extract in healthy adults." Cureus 2019;11(12):e6466.
12. NIHNational Institutes of Health, LiverTox — Ashwagandha hepatotoxicity summary.
13. PubMedKimura K et al. "L-theanine reduces psychological and physiological stress responses." Biol Psychol 2007;74(1):39-45.
14. PubMedHidese S et al. "Effects of L-theanine administration on stress-related symptoms and cognitive functions in healthy adults: a randomized controlled trial." Nutrients 2019;11(10):2362.
15. PubMedHellhammer J et al. "Effects of soy lecithin phosphatidic acid and phosphatidylserine complex on the endocrine and psychological responses to mental stress." Stress 2004;7(2):119-126.
16. PubMedStarks MA et al. "The effects of phosphatidylserine on endocrine response to moderate intensity exercise." J Int Soc Sports Nutr 2008;5:11.
17. PubMedOlsson EM et al. "A randomised, double-blind, placebo-controlled study of the standardised extract SHR-5 of Rhodiola rosea in subjects with stress-related fatigue." Planta Med 2009;75(2):105-112.
18. PubMedIvanova Stojcheva E, Quintela JC. "The effectiveness of Rhodiola rosea preparations in alleviating life-stress symptoms and stress-induced conditions." Molecules 2022;27(12):3902.
19. PubMedCadegiani FA, Kater CE. "Adrenal fatigue does not exist: a systematic review." BMC Endocr Disord 2016;16(1):48.
20. NIHNational Institute of Diabetes and Digestive and Kidney Diseases (NIH) — Cushing Syndrome.
21. NIHNational Institute of Diabetes and Digestive and Kidney Diseases (NIH) — Adrenal Insufficiency & Addison Disease.