Adrenal Function Support
Healthy adrenal gland output for stress and energy.
TL;DR
"Adrenal support" usually means improving the body's stress response and cortisol rhythm rather than treating a diseased gland. Adaptogens have modest evidence; true adrenal insufficiency is a medical diagnosis.
Why It Matters
"Adrenal fatigue" is not a recognized diagnosis, and systematic reviews find no consistent cortisol abnormality in people given that label. What is measurable is a blunted or shifted diurnal cortisol curve under chronic stress. Genuine adrenal insufficiency (Addison disease, secondary suppression after steroid use) is rare, dangerous and requires endocrinology care, not supplements.
How to Measure
If symptoms suggest true insufficiency (weight loss, hyperpigmentation, low sodium, faintness), ask for an 8am serum cortisol and an ACTH stimulation test. For rhythm assessment, a four-point salivary cortisol day-curve is the more informative research tool. Hair cortisol and single random draws are poor stand-alone indicators.
Biomarkers
Optimization Protocol
1. Rule out real pathology before supplementing — check morning cortisol if symptoms are red-flag. 2. Anchor circadian rhythm: fixed wake time, 10 minutes of outdoor morning light, consistent meal timing. 3. Cap caffeine at 400 mg/day and stop by early afternoon. 4. If trialing an adaptogen, use ashwagandha 300-600 mg/day of a standardized root extract for 8 weeks and track a validated stress score. 5. Address sleep debt first; it drives more cortisol disruption than any supplement can fix.
Lifestyle Levers
- •Consistent sleep-wake timing
- •Morning daylight exposure
- •Zone 2 aerobic exercise
- •Caffeine cut-off by 2pm
- •Breathwork or meditation
- •Regular protein-containing meals
Supporting Supplements
Ashwagandha
Multiple small RCTs report lower perceived stress and modest cortisol reductions over 6-8 weeks.
Rhodiola Rosea
Rhodiola shows short-term benefit for stress-related fatigue in small trials, with inconsistent cortisol effects.
Supporting Research
Frequently Asked Questions
Typical Timeframe
Sleep and light changes shift the cortisol curve within 1-2 weeks; adaptogen trials generally report perceived-stress improvement at 6-8 weeks.
Research Summary
My Notes
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This information is for educational purposes only. Always consult a healthcare professional before starting any supplement regimen.