From Slate Magazine · Talia Barrington · · 1m 20s
Cortisol Test Results Show What's Really Wrong
Tracking cortisol levels reveals daily habits, not stress.
In brief
Tracking cortisol levels reveals daily habits, not stress. At-home cortisol tests highlight poor habits like late caffeine, not stress. Originally reported by Slate Magazine.
Sunday morning test

I wake up to take a cortisol test using saliva, not pee.
Cortisol chatter
Influencers blame cortisol for belly fat, hair loss, and moon face.
Cortisol test kit
I ordered Eli’s $199 kit for 24 tests with a three-month subscription.
Test process

Sucking on the test for 60 seconds, waiting 20 minutes, scanning it gives results.
Cortisol’s role
Cortisol affects metabolism, circadian rhythm, inflammation, and blood pressure.
Expert view
Endocrinologist Rachna Relwani says cortisol isn’t a stress meter.
“It isn’t a stress meter that tells us if you’re stressed at that moment in time”
Test limitations
Most tests aren’t regulated with sound data to back up their conclusions.
“Many of the at-home tests, she added, are not regulated with sound data to back up their conclusions”
Cortisol triggers
Severe stress, sleep apnea, and substance use can raise cortisol levels.
“Patients with severe psychiatric illness, patients who have alcohol and substance use disorder, patients who have severe sleep apnea, if you test their cortisol, it will be abnormally high”
Diet advice
Katie Whitson recommends tracking daily routines for better health.
Carbs matter
Eating carbs every few hours supports brain and heart function.
Test results
Late caffeine and wine caused out-of-range cortisol readings.
“out of range”
What’s next
I’ll go back to eating well, sleeping more, and enjoying life.
The one thing
At-home cortisol tests highlight poor habits like late caffeine, not stress.





