SCIENCE BACKED. WRITTEN FOR YOU.

The Vesper Journal

Evidence reviewed by clinicians, written for women in their prime years. Sleep, hormones, energy, mood.

hot-flashes
Hot Flashes at Work: How High-Performing Women Are Managing Symptoms in 2025
It was a Tuesday morning. I was presenting the Q3 revenue numbers to a room of twelve people, including our CEO. I...
Rebecca Stoll 8 min read
sleep
The Cortisol-Sleep Connection in Perimenopause: Why Stress Hormones Steal Your Rest
The Cortisol-Sleep Connection in Perimenopause: Why Stress Hormones Steal Your Rest The relationship between cortisol and sleep is bidirectional and self-reinforcing in...
Margaret Holloway 7 min read
sleep
Why You Wake Up at 3 AM During Perimenopause (And What's Actually Happening)
Why You Wake Up at 3 AM During Perimenopause (And What's Actually Happening) It's 3:17 AM. You're wide awake. No noise woke...
Rebecca Stoll 6 min read
stress
Ashwagandha KSM-66: The Clinical Evidence Behind the 23% Cortisol Reduction
The 23% figure is specific enough to be meaningful and well-replicated enough to be trusted. In a 2012 double-blind, placebo-controlled trial published...
Margaret Holloway 7 min read
sleep
The 3:47 AM Wake-Up: Understanding Cortisol Spikes and How to Stop Them
The 3:47 AM Wake-Up: Understanding Cortisol Spikes and How to Stop Them You know the exact time without looking at the clock....
Rebecca Stoll 8 min read