Knife Down
"Knife Down" is what a surgeon says in the OR when she puts her scalpel down so no one gets hurt — and it’s the mission here: put the knife down, long before anyone needs to use it.
Knife Down is a podcast about how to actually invest in your health so you can live longer, stronger, and with less time in doctors’ offices. The core focus is the world’s leading cause of death—cardiovascular disease—and what to do about it before it shows up as a catastrophe.
Hosted by a vascular surgeon on a mission to put herself out of business, the show translates cutting-edge science on prevention, metabolic health, and longevity into real-world strategies you can use in clinic or at your kitchen table. Expect evidence, nuance, and zero wellness hype—plus the occasional dark joke about the state of modern medicine.
Knife Down
Latest Episodes
High LDL, Rapid Plaque Progression?! Dave @FeldmanProtocol & I Debate the Data
Dave Feldman came into my studio and we went through Simon Hill's critique of the KETO-CTA data one clip at a time — high LDL, "rapid plaque progression," the retracted paper, the new preprint. We disagree, and we do it honestly.At the ...
What a Vascular Surgeon Eats—and the Artery Test I’m Repeating
In this comment-response episode, I break down what I eat in a typical day as a vascular surgeon focused on cardiometabolic prevention. I also discuss the reliability of CIMT testing, why I plan to repeat my own scan, and what first drew me to ...
My Arteries Got Older?! A Vascular Surgeon Explains CIMT Results
My CIMT results came back—and one number moved in the wrong direction. In this video, I walk through my own carotid intima-media thickness (CIMT) scan, explain arterial age, plaque burden, IMT progression, and measurement variability, and talk ...
What Really Causes Heart Disease: LDL or Inflammation?
In this video, Dr. Lily Johnston addresses viewer questions about lipid panels, heart disease risk, and diagnostic testing. Key topics include:Coronary Calcium Scans vs. CCTA/CIMT: Why calcium scores may not be sufficient for younger pa...
This Changes How I Think About Creatine
Can a simple 5g scoop of creatine do more than just build muscle? In today’s video, I’m reacting to Thomas DeLauer’s insights on how creatine might “spare” your body’s methylation cycle—and then diving deep into the actual clinical data to see ...