Cortisol Test: What It Measures and When You Actually Need One

Cortisol gets blamed for everything in wellness culture belly fat, bad sleep, anxiety, burnout, “adrenal fatigue.” And while cortisol genuinely is involved in all of those things, here’s what most of that content skips: cortisol levels naturally vary by as much as tenfold throughout a single day, which means a single cortisol number, drawn at […]