I'm a cardiologist. Something just happened today that I genuinely did not see coming — and it could change the future of preventive medicine more than anything I've written about on this platform.
Midjourney — the AI company that became famous for generating images from text prompts — just announced a medical hardware division and unveiled a working prototype of a full-body scanner unlike anything that's ever existed.
It's called the Midjourney Scanner. And it works like this.
You step into a shallow pool of water. You stand on a platform that slowly descends — about two inches per second — through a ring containing roughly half a million tiny ultrasonic transducers, each the size of a grain of sand. Every one of them acts as both a speaker and a microphone, sending ultrasonic waves through your body from every angle and recording what comes back.
60 seconds later, you step out. The scan is done.
No radiation. No magnets. No claustrophobia. No IV contrast. Just sound, water, and an almost incomprehensible amount of computing power — roughly 2 petaflops processing 17 gigabytes per second of raw acoustic data — reconstructing a 3D map of your entire internal anatomy down to half a millimeter resolution.
Organs. Tissues. Blood vessels. Bones. Muscle. Fat distribution. All segmented by AI in real time.
As a cardiologist who has spent months writing about how the standard screening playbook misses the majority of future heart attacks — this is the technology I've been waiting for without knowing it existed.
Here's why this matters for the future of your heart.
Right now, getting a detailed look inside your cardiovascular system requires either a CT scan (radiation), an MRI (magnets, claustrophobia, 45-60 minutes, $1,000+), or a coronary CT angiogram (radiation, IV contrast, limited availability). These are powerful tools. I order them regularly and they save lives.
But they're reactive. You get them when something is already suspected. They're expensive. They're uncomfortable. And for most people, they happen once — maybe twice — in a lifetime.
Imagine instead: a 60-second scan with no radiation that you could repeat monthly or quarterly. Tracking cardiac structure over time. Watching body composition shift. Detecting changes in organ size, fluid distribution, or vascular architecture before symptoms ever develop. Building a longitudinal dataset of YOUR body that AI can analyze for patterns no single snapshot would reveal.
That's what Midjourney is building toward.
The company plans 50,000 scanners worldwide over six years, with capacity for a billion scans per month. The first location — the "Midjourney Spa" in San Francisco — opens at the end of 2027 with 10 scanners alongside saunas, cold plunges, and a gym. The scan costs a few dollars. The experience is designed to feel like wellness, not medicine.
The technology is built on Butterfly Network's ultrasound-on-chip platform — 40 modules per scanner — combined with Midjourney's own AI segmentation and reconstruction stack. David Holz, the founder, claims the system aims for image quality comparable to MRI in many aspects but at nearly 100x the speed with zero radiation.
Now the caveats — because I'm a physician and the caveats matter enormously.
This is a Gen 1 prototype. About a dozen people have been scanned so far. Current scan time is actually closer to 20 minutes, not 60 seconds — the system is bottlenecked by bandwidth and reconstruction algorithms. The 60-second target is aspirational for future hardware generations.
It is not FDA-cleared for diagnostic use. Midjourney is starting with body composition maps — a category below diagnostic imaging in the regulatory hierarchy. The path from "beautiful 3D body scans" to "clinically validated diagnostic tool that your cardiologist can act on" runs through years of clinical trials, comparative studies against MRI and CT gold standards, and FDA review.
No independent clinical validation has been published. The imaging claims come from Midjourney's own demonstrations. Comparative data against established modalities does not yet exist.
And the privacy implications of full-body internal scans at planetary scale — a billion scans per month — is a conversation that hasn't even started yet.
So I want to be precise. This is not ready for clinical medicine today. It may not be ready for years. Many ambitious medical hardware projects have failed in the gap between prototype and product.
But.
The fact that a working prototype exists — producing real segmented 3D anatomy from sound waves and compute alone — means the physics works. The engineering works. The question is no longer "is this possible" but "how fast can it be validated and scaled."
And if it is validated — if the resolution holds up against MRI, if the AI segmentation proves reliable, if the regulatory path clears — then what we're looking at is the most significant new imaging modality in 50 years.
For my entire career, preventive cardiology has been limited by the fact that seeing inside the body is expensive, slow, uncomfortable, and infrequent. We catch disease late because we image rarely. We image rarely because imaging is hard.
A 60-second, no-radiation, spa-based full-body scan that costs a few dollars would demolish every one of those barriers.
I've written about AI detecting inflamed arteries. About gene editing curing cholesterol. About GLP-1 drugs rewriting metabolic medicine. About cellular reprogramming reversing aging.
This is the missing piece: the ability to see inside every human body, routinely, safely, and affordably — so all of those interventions can be deployed before the disease arrives instead of after.
The company that taught AI to generate images from imagination just built a machine that generates images from the human body.
The future of medicine showed up today from the last place anyone expected.
1. Cholesterol → steroid hormone synthesis (testosterone, progesterone, DHEA, pregnenolone)
Miller WL, Auchus RJ. The molecular biology, biochemistry, and physiology of human steroidogenesis and its disorders. Endocrine Reviews. 2011;32(1):81–151. https://t.co/h4IbVdoIZV
Dehydroepiandrosterone Sulfate Stimulates the First Step in the Biosynthesis of Steroid Hormones. PMC3931814 https://t.co/M4lyhLXw2m
2. The brain is the body’s most cholesterol-rich organ — and synthesizes neurosteroids from it
Orth M, Bellosta S. Cholesterol: Its Regulation and Role in Central Nervous System Disorders. Cholesterol. 2012;2012:292598. PMC3483652 https://t.co/zfRDJ7qLwg
3. Low brain cholesterol linked to neurodegeneration / statins suppress CNS cholesterol synthesis
Cibičková L. Statins and their influence on brain cholesterol. Journal of Clinical Lipidology. 2011;5(5):373–379. https://t.co/myTMMVDRMj
Ray Peat newsletter (November 2018) — via https://t.co/KfeCwRDmOR (heterodox — labeled as Peat framework)
4. Low serum cholesterol associated with depression, suicide, and violent behavior
Muldoon MF, Manuck SM, Matthews KM. Lowering cholesterol concentrations and mortality: a quantitative review of primary prevention trials. BMJ. 1990;301(6747):309–314. https://t.co/35NgDbxyCL
Engelberg H. Low serum cholesterol and suicide. Lancet. 1992;339(8795):727–729. https://t.co/jF1LnBDfX0
Partonen T, Haukka J, Virtamo J, et al. Association of low serum total cholesterol with major depression and suicide. British Journal of Psychiatry. 1999;175:259–262. https://t.co/ez4PjHnmxF
5. Depressed men with cholesterol below 165 mg/dL — 7× higher premature death risk
MosaicDX clinical summary citing Journal of Psychiatric Research findings. https://t.co/5KvmgEsYDY
The Relationships between Cholesterol and Suicide: An Update. PMC3671696 https://t.co/gimxEfBaS3
6. Cholesterol stabilizes serotonin transporter function
Scanlon SM, Williams DC, Bhatt DL, et al. — membrane cholesterol modulates serotonin transporter activity via specific molecular interactions. Referenced in: ScienceDirect — Cholesterol concentrations in violent and non-violent women suicide attempters (2003) https://t.co/k8R9B7zoty
7. Baroldi autopsy study — only 41% of heart attack deaths showed sufficient arterial blockage
Cowan T. What Causes Heart Attacks. https://t.co/ExlOdiRcs5 (citing Baroldi’s pathology research) https://t.co/zw524YZsDo (Note: Cowan cites Baroldi’s work — the original Baroldi autopsy data is the primary source he references)
8. Annals of Internal Medicine 2014 — insufficient evidence that saturated fat increases heart disease risk
Chowdhury R, Warnakula S, Kunutsor S, et al. Association of dietary, circulating, and supplement fatty acids with coronary risk: a systematic review and meta-analysis. Annals of Internal Medicine. 2014;160(6):398–406. https://t.co/jcKoxDMki5
9. Ray Peat primary source — cholesterol, longevity, and protective steroids
Peat R. Cholesterol, longevity, intelligence, and health. https://t.co/HMsDPT6LQL https://t.co/2DPJItlkKh (heterodox — labeled as Peat framework)
Sources available on request. This post draws on peer-reviewed endocrinology, published meta-analyses, and the heterodox bioenergetic framework of Dr. Ray Peat (1936–2022). Where Peat’s views are referenced, they extend beyond mainstream consensus and are labeled as such. Nothing here constitutes medical advice.
Your doctor said your cholesterol is high.
Here’s what they probably didn’t tell you.
Cholesterol is the raw material your body uses to build every steroid hormone you have — testosterone, progesterone, pregnenolone, DHEA, cortisol. Without it, the entire hormonal architecture collapses. This is textbook endocrinology.
Dr. Ray Peat spent decades documenting what the research actually shows: the brain is the body’s richest source of cholesterol — and it’s there for a reason. The brain converts cholesterol into the very neurosteroids that protect it from degeneration. Low cholesterol in the brain has been directly linked to accelerated neurodegeneration, and statins — which cross the blood-brain barrier — inhibit this synthesis in the organ that needs it most.
Dr. Tom Cowan has pointed out for years that in the largest autopsy study ever conducted on people who died of heart attacks, only 41% showed arterial blockage sufficient to cause one. The cholesterol narrative has never cleanly fit the data.
And then there’s this — consistently replicated across decades of peer-reviewed literature:
Low serum cholesterol is associated with significantly higher rates of depression, suicide, and violent behavior. One study found depressed men with total cholesterol below 165 mg/dL were seven times more likely to die prematurely from unnatural causes. The proposed mechanism is direct: cholesterol is required to stabilize serotonin transporter function in the brain. Reduce it aggressively and the system that regulates impulse, mood, and behavior begins to fail.
The people being prescribed statins to lower a number are not being told this.
Cholesterol isn’t the threat. It’s the building block. The real question — the one almost nobody in conventional medicine is asking — is why the body is producing more of it. Because elevated cholesterol is almost always a downstream signal, not the upstream cause.
Understand the signal. Don’t silence it.
— Bio⚡️
This is educational content — not medical advice. Always work with a qualified clinician before making changes to any prescribed treatment.
Sources in comments ⬇️