Cortisol and Stress Hormones: Common Questions
The adrenal hormones released in response to stress, and the rare conditions affecting them.
Last revised
Cortisol and Stress Hormones: the questions people actually ask, answered from published guidance.
Key takeaways
- "Adrenal fatigue": not a recognised medical diagnosis
- Addison's disease: rare, causing fatigue, weight loss, low blood pressure and skin darkening
- Most useful single change: Ask for proper testing rather than accepting "adrenal fatigue".
- Commonest mistake: Buying adrenal support supplements.
- See a doctor if any of the signs under "When to get help" below apply to you.
What is Cortisol and Stress Hormones?
The adrenal hormones released in response to stress, and the rare conditions affecting them.
Why does it matter?
Cortisol is heavily marketed as an explanation for tiredness, while genuine adrenal disease is rare, specific and testable.
"Adrenal fatigue" for Cortisol and Stress Hormones?
Not a recognised medical diagnosis.
Addison's disease for Cortisol and Stress Hormones?
Rare, causing fatigue, weight loss, low blood pressure and skin darkening.
Cushing's syndrome for Cortisol and Stress Hormones?
Rare, causing central weight gain, thin skin, easy bruising.
Commonest cause of raised cortisol effects for Cortisol and Stress Hormones?
Prescribed steroid medication.
What is the single most useful thing to do?
Ask for proper testing rather than accepting "adrenal fatigue".
What is the most common mistake?
Buying adrenal support supplements.
When should I see a doctor?
Never stop long-term steroid medication suddenly. Call 999 for severe weakness, vomiting, abdominal pain, confusion or collapse in anyone taking or recently stopping steroids — adrenal crisis is life-threatening and needs immediate hydrocortisone. Carry a steroid emergency card.
Where to go next
- Cortisol and Stress Hormones: A Beginner-Friendly Start
- Cortisol and Stress Hormones: The Questions People Actually Ask
- Cortisol and Stress Hormones — the reference entry
- Vitamin D and Hormones: What the Evidence Actually Says
- The Evidence on Hormonal Contraception and Health, Without the Hype
When to get help
Never stop long-term steroid medication suddenly. Call 999 for severe weakness, vomiting, abdominal pain, confusion or collapse in anyone taking or recently stopping steroids — adrenal crisis is life-threatening and needs immediate hydrocortisone. Carry a steroid emergency card.
Where this comes from
- NICE — Addison's disease clinical knowledge summary
- Society for Endocrinology — steroid emergency card
How this page was put together
Every figure, recommendation and warning above is taken from the guidance named in Where this comes from. Nothing on this page is inferred, summarised or generalised beyond what those bodies publish: where they give a number, it is their number, and where they are silent, so are we. Pages are rebuilt whenever the underlying record changes. Sign-off by a named clinician, where it has happened, is shown at the top of the page along with the date.
Medical disclaimer
This article is general information, not medical advice. It cannot account for your own history, medication or circumstances. Always speak to a GP, pharmacist or another qualified health professional before making changes that affect your treatment, and never delay seeking medical advice because of something you have read here. In an emergency, call 999.
