Cortisol-First Hormone Model
Stabilize the stress signal before chasing downstream hormones
- Difficulty
- Moderate
- Time to result
- ~weeks to results
- Steps
- 5
- Confidence
- 90%
This model treats cortisol as an upstream stress signal that can disturb insulin and, through that cascade, affect estrogen, testosterone, progesterone, and thyroid hormones. The practical implication is sequencing: before chasing every downstream number, examine the daily cortisol rhythm and the lifestyle pressures driving it. Map symptoms across the day, use a four-point test when appropriate, and look for rest deficiency, overwork, overtraining, poor sleep, or unresolved stress. Then reduce the dominant stress load and restore basic recovery habits. The model does not claim that every hormonal condition is caused by cortisol; it is a prioritization tool for cases where stress and lifestyle clearly track with symptoms.
Origin
Dr. Josh Axe linked his own overwork-related digestive and skin symptoms to a rest deficiency, then explained the cortisol cascade on Habits & Hustle.
Core principles
- 01Cortisol is highly responsive to stress and lifestyle
- 02An upstream cortisol disturbance can affect insulin and other hormones
- 03More supplements cannot repair a rest or lifestyle deficit
- 04Timing matters, not only whether a hormone is high or low
How to run it
- 1
Map the rhythm
Record sleep, energy, stress, exercise, and symptoms at different times of day. Look for a repeated timing pattern rather than one isolated bad day.
Pro tip A one-week log is often enough to reveal obvious scheduling pressure.
- 2
Check the upstream signal
When clinically appropriate, use a multi-point cortisol assessment to see whether levels are high or low at the wrong time. Interpret results with a qualified practitioner.
Watch out Do not diagnose adrenal or endocrine disease from symptoms alone.
- 3
Find the stress driver
Identify the biggest recurring source: excessive workload, overtraining, poor sleep, emotional strain, or an always-on schedule. Prioritize the driver with the clearest connection to symptoms.
Pro tip Look for subtraction before adding another supplement.
- 4
Restore recovery
Create room for sleep, lower-intensity movement, time outside, relationships, and emotional regulation. Make the recovery action concrete and scheduled.
Pro tip Reduce training volume before abandoning movement entirely.
Watch out Do not use lifestyle work as a reason to stop prescribed treatment abruptly.
- 5
Reassess downstream effects
After a consistent recovery period, review energy, sleep, glucose regulation, and hormone symptoms. Target remaining issues based on fresh evidence.
Pro tip Compare against the original symptom log.
In the wild
A high achiever notices eczema and poor sleep after intense daily workouts. They log symptoms, reduce workout intensity for two weeks, add walking and an earlier bedtime, and then reassess before adding another supplement.
→ The experiment tests whether recovery, rather than deficiency, is the missing input.
Common mistakes
Chasing every downstream marker
Treating testosterone, estrogen, thyroid, and insulin separately can miss a shared stress-related driver.
Supplementing a rest deficiency
Adding compounds while preserving an overloaded schedule leaves the principal input unchanged.
Reading one measurement in isolation
Cortisol has a daily rhythm, so timing and context matter.
Is it for you?
Best for
People with stress-linked fatigue, sleep disruption, overtraining symptoms, or multiple shifting hormone complaints.
Not ideal for
Anyone needing urgent endocrine care or medication changes without a qualified clinician.
From the transcript
“cortisol is kind of your body's master hormone.”
“if you can start to fix cortisol which tends to be it's all lifestyle.”
“my issue is not a nutrient deficiency it's a rest deficiency like I'm just doing too much all day long”
From the episode
Episode 485: Dr. Josh Axe: Why Your Healthy Smoothie is Making You Sick (And What Actually Heals)
Dr. Josh Axe