1 Oct 2026
Sleep Your Way To Skinny
You can eat well, exercise, take all the right supplements, and still feel stuck. And if you're not sleeping, that's probably why.
This is a new episode of Diagnose This with Dr. Z, joined by sleep and hormone specialist Dr. Leigha Saunders, to talk about the one thing most people keep deprioritizing while wondering why nothing else is working.
Sleep is not a reward for getting everything done. It's the process by which your body restores, regulates, detoxifies, balances hormones, consolidates memory, repairs tissue, and decides what to do with fat. Skip it, and the whole system starts compensating in ways that look a lot like the chronic symptoms patients bring to functional medicine appointments every day.
Ghrelin goes up when you're sleep-deprived, which means hunger goes up. Leptin goes down, which means satiety goes down. Cortisol spikes. Insulin sensitivity drops. And none of this shows up on a standard lab panel as sleep deprivation. It shows up as weight gain, mood instability, brain fog, inflammation, and a body that doesn't seem to respond to anything you try.
Dr. Saunders spent years watching patients do everything right and still plateau. Sleep was almost always in the conversation. Not as a punchline. As the actual mechanism.
This episode is about the science of what sleep actually does, and what it undoes when you don't get it, plus practical starting points for people who've tried everything and still aren't sleeping well.
In this episode:
Why sleep deprivation looks exactly like hormone dysfunction on a blood panel
Ghrelin, leptin, cortisol, insulin, what one bad night actually does to all four
Why you can't out-supplement or out-exercise poor sleep
The connection between sleep architecture, weight, and metabolic health
What functional medicine looks for when sleep isn't responding to the basics
Practical first steps that don't involve white noise machines and chamomile tea
If you've ever been told "you're fine" when you know deep down you're not, Dr. Z was you. Now she's fixing what dismissed both of you.
Seven specialists. Eight prescriptions. Her brain electrocuted 20 times for what turned out to be an infection. They labelled her permanently disabled. Told her she'd never work again. So she's fixing the system that failed both of you.
This isn't just a podcast. It's the platform she desperately needed when she was sick, dismissed, alone, and searching for answers at 2 AM because no one else was asking WHY.
👉 Take the Ask WHY Quiz: https://diagnosethis.com/home
Your symptoms aren't random. Your dismissals aren't coincidence. Get your personalized WHY Report in minutes - the framework that helps you walk into your next appointment prepared to be heard.
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