@tryhemo
Account based inUnited States
About this account
- Account based in
- United States
- Connected via
- United States App Store
Account-level information from X, not a live location or the device used for a specific post.
Upload labs from anywhere, see your trends clearly, and understand what changed over time. Private. Mac-native.
United States
Joined May 2025
- Tweets109
- Following25
- Followers101
- Likes146
Hemo - Bloodwork tracker retweeted
NEW: Brad Gerstner (@altcap) & Jason Chang (@yoweichang) are trying to turn a $100 CAC heart scan into the “mammogram for the heart.”
At the All-In Summit, Brad brought his mobile coronary artery calcium CT scanner to screen attendees & make the case for preventing heart attacks at scale.
Heart disease kills ~800,000 Americans annually. Brad believes scaling CAC scans to 40M people a year could save 50,000 lives & $20B in government healthcare costs annually.
Rob Goldberg joined us to explain why the mission is deeply personal.
His brother Dave Goldberg, married to Sheryl Sandberg, died suddenly at 47 from undiagnosed heart disease, leaving behind their two young children. Just five months earlier, he had passed a running EKG.
“My brother had passed a running EKG five months before he dropped dead from heart disease, from undiagnosed heart disease.”
Dave’s death became the foundation for Sandberg’s book Option B, co-written with Adam Grant, about grief, resilience & rebuilding life after devastating loss.
Now Brad Gerstner, Rob Goldberg, Jason Chang & the rest of the besties, & the team behind the Center for Heart Attack Prevention want to prevent more families from experiencing the same thing, pushing for earlier detection, broader access to CAC scans & changes to the standard of care.
We go inside the mobile scanner & discuss:
› Why Brad calls CAC scanning the “mammogram for the heart”
› The Goldberg family’s experience with undiagnosed heart disease
› Why cholesterol & traditional testing can miss cardiovascular risk
› What CAC scores actually tell you
› Difference between a calcium CT scan & an angiogram
› Why Brad bought his own mobile scanner
› The “buy one, give one” model for expanding access
› Brad’s push to bring CAC screening to 40 million Americans a year
› How a roughly $100 scan could potentially prevent thousands of premature deaths
› Why Brad believes health data gives people the power to take action
𝐓𝐈𝐌𝐄𝐒𝐓𝐀𝐌𝐏𝐒
00:00 Brad Gerstner & Rob Goldberg
00:10 CAC Scanner Moonshot
01:53 Rob’s Family Tragedy
04:39 Center Missions and Prevention
05:37 Why Cholesterol Became Standard
10:07 Overcoming Fear and Insurance
12:29 CAC vs Angiogram Guidance
14:43 Where the Trailer Goes Next
16:40 Inside the Scanner Demo
20:48 Why Labs Miss Risk
23:27 Final Call to Action
We may be thinking about coronary artery disease the wrong way.
Traditionally, a lot of attention has gone toward stenosis: (how blocked is a particular artery?)
But a new study of more than 23,000 adults suggests the total amount of plaque throughout your coronary arteries may tell us more about future heart attack risk than whether you have one major blockage.
Researchers followed participants for nearly 8 years and used software to quantify total plaque volume from coronary CT angiograms.
Risk rose steadily as total plaque burden increased. People in the highest plaque-volume group had more than 6x the risk of heart attack or coronary death compared with those with no detected plaque.
And this is where it gets really interesting.
The automated analysis quantified plaque in roughly twice as many people as conventional readings by radiologists and cardiologists identified.
Even among people whose scans were manually read as showing no atherosclerosis, small amounts of plaque picked up by the software were associated with significantly higher future risk.
Adding that quantified plaque burden improved risk prediction beyond traditional risk scores, calcium scores, and the standard CTA interpretation.
And having one major blockage wasn’t necessarily the most important signal. Once researchers knew how much plaque was present overall, knowing whether someone had a ≥50% blockage added very little.
That points toward an interesting future for heart imaging:
Not just asking, “Do I have a blockage?”
But, “How much atherosclerosis do I actually have?”
This gets even more interesting as newer photon-counting CT scanners come online, making it possible to get detailed coronary CTA (CCTA) imaging at much lower radiation doses.
If you’re already discussing coronary imaging with your cardiologist, it may be worth asking whether quantitative plaque analysis is available.
We may be moving toward a world where we don’t just detect coronary disease.
We measure how much of it you actually have.
Incremental Predictive Value of Deep Learning–Quantified Coronary Atherosclerotic Volume: A SCAPIS Cohort Analysis
Published: 28 August 2026
Conclusion:
Automated deep learning–quantified Total Plaque Volume improved prediction of first coronary events beyond SCORE2, coronary artery calcium score, and manually derived coronary CTA measurements, and identified even small plaque volumes associated with increased risk in a general population without established atherosclerotic cardiovascular disease.
jacc.org/doi/10.1016/j.jcmg.…
Biomarker Collections just made their way into Hemo.
Think of these like playlists for your markers. Group any set around a theme, put them in the order you want, then filter to that set to keep them in check.
Available today.
Your doctor says your LDL looks fine.
But LDL measures cholesterol concentration, not how many particles are pushing into your artery walls. ApoB does. One ApoB molecule per atherogenic particle. That's a direct count.
You can have normal LDL and elevated ApoB. It happens a lot, especially with metabolic issues.
Hemo tracks both markers over time so you can spot that discordance early, not after a cardiac event.
Health twitter is outraged by @foundmyfitness's small tweak to her personal smoothie of choice. As if she took away bananas forever 😆
Exciting launch from @Garmin.
Anyone have a good comparison video between Garmin's CIRQA and Google's Fitbit Air?
NEW: @Garmin just launched a screen-free fitness band with no subscription.
CIRQA is built for people who want health, sleep, and workout tracking without wearing another screen on their wrist.
-Tracks heart rate, Body Battery, Pulse Ox, stress, skin temperature, and more
-Auto-detects activities and gets smarter as you confirm them
-Includes sleep score, HRV, respiration, nap detection, and recovery insights
-Training readiness, VO2 max, training status, workout benefit, and recovery time
-Gets up to 10 days of battery life
Priced at $199.99 with no subscription required.
One of our earliest beta testers included Hemo in his top macOS app picks for 2026.
Grateful to be mentioned alongside so many great products.
Thanks, @vDerekS, for the support, thoughtful feedback, and ideas that have helped make Hemo better along the way.
Hemo - Bloodwork tracker retweeted
Awesome Mac app! Great developer too.
Introducing Health Snapshot in Hemo.
The snapshot is useful because it highlights the most meaningful trends across all your data. And it stays up to date with each new upload of lab work.
Automatically.
From what happened this test to what's happened over the last couple years.
v1.0 available now in beta.
Introducing Health Snapshot in Hemo.
The snapshot is useful because it highlights the most meaningful trends across all your data. And it stays up to date with each new upload of lab work.
Automatically.
From what happened this test to what's happened over the last couple years.
v1.0 available now in beta.
Hemo - Bloodwork tracker retweeted
The most misunderstood number in all of medicine is the one many doctors call normal.
Your labs come back, everything sits inside the reference range, nobody says a word, and you walk out believing you're healthy. But normal and healthy were never the same thing.
I spent years in the clinical laboratory building and running these reference ranges. Let me show you exactly where normal comes from, why it's a far softer number than you think, and the difference between normal, optimal, and the territory where you're quietly sliding toward a diagnosis.
This will change how you read every lab report you ever get again.
1 of 10
Hemo - Bloodwork tracker retweeted
It’s very common. A lot of docs don’t even think about it. When you learn how a lab creates “normal” you’ll want to be anything but.
There’s a few options out there where companies give you the ability to upload your reports from other labs into a database that interprets the values and displays them in an optimal format and helps you track trends over time before they become a diagnosis.
Had the opportunity to speak with one of the developers of such a system recently. @SurrealBlend is building tryhemo.com or @tryhemo - he left a job at Microsoft to build something that had a personal interest to him after he got a CAC score done and was introduced to a true need in the market.
Keep an eye out. He’s doing it right.