Greg Katz
@gregorykatz
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Dad to Leah and Cora. Cardiologist and Internal Medicine Residency APD @nyugrossman Opinions my own.
New York, NY
Joined July 2009
RT @B_Holmer: Health bros need a comprehensive blood test with 2,000 biomarkers to tell them “eat more veggies.”.
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RT @adambermanmd: Incredibly honored to receive the 2025–2026 Glorney-Raisbeck Junior Faculty Research Award in Cardiovascular Diseases fro….
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High blood pressure isn’t exciting. But it’s deadly. Check out my post on:.-When to start meds.-When to stop.-What works (and what doesn’t).-Why most of us are missing the point.📬 Read here: 💡 Skipping is fine. Skipping BP meds isn’t.
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I get asked all the time:.“Can I stop my blood pressure meds?”.If you're BP is over 130/80, the answer is basically always no. But even if it's lower and if you're doing well on meds?.It makes sense to stay the course. That’s what the best trials show (SPRINT, STEP).
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Most people don’t have a single cause of hypertension. It’s multifactorial, with contributions from:.-Poor sleep.-Too many calories (and sometimes too much sodium or too little potassium).-Too little exercise.-Too much visceral fat.-Genetics.All layered together. Lifestyle helps.
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In any given week, I hear questions from about 10 patients about some esoteric health trend they heard about on a podcast or Instagram.Approximately zero ask me about their blood pressure. Skipping won’t save you from a stroke. But treating your high BP might.
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High blood pressure is called “the silent killer.”.But maybe it’s the boring killer—because no one wants to talk about it. No symptoms. No hype. No clicks. But it’s the most important modifiable risk factor for heart attack, stroke, kidney failure, and dementia. 🧵.
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Focusing on improving your grip strength as a metric of importance is a good example of Goodhart’s law in action.
The strongest predictor of how long you’ll live:. Grip Strength. It’s not just about "being strong"…. It’s a direct reflection of your overall health. Here’s why grip strength matters, what it reveals, and how to improve it:
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More on the data, the nuance, and what it means for clinical care.Link to the full newsletter here 👇.📩.
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Here’s the takeaway:.A low-carb diet can help and hurt. If it makes you feel better but your LDL spikes, don’t ignore that. You can keep the diet and treat the number. Those aren’t contradictory goals.
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Some influencers focused on the fact that LDL and apoB didn’t predict progression in this group. But when everyone’s LDL is off the charts, you’re not testing the value of the marker. You’re seeing what extreme levels can do.
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These patients had the fastest progression of coronary plaque ever reported in a group like this. Even without insulin resistance. Even with great blood pressure. Even without inflammation. Just LDL cholesterol. A lot of it.
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A recent study followed people with super high LDL on a low-carb diet, using serial coronary CTAs to track plaque growth over time. They were otherwise healthy. No diabetes, no meds. But the results were alarming.
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Some people in this diet camp have coined the term for these folks 'Lean Mass Hyper-responders'.They're fit, insulin-sensitive, and have normal triglycerides. but their LDL triples on keto. They feel great.Their glucose is perfect.They look healthy.But do their arteries agree?.
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🧵Low-carb diets help a lot of people lose weight, improve blood sugar, and feel better. But in a small subset of metabolically healthy people, they also cause LDL cholesterol to skyrocket, sometimes rising over 300 mg/dL. What happens to their arteries?.Let’s talk.
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RT @tracewoodgrains: During the Democratic primary campaign, Zohran's plans to get rid of gifted education in elementary and middle schools….
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Probably need one more plank in here about penalties for not curbing your dog but otherwise you have my vote.
In light of the underwhelming field, I am announcing my run for mayor of New York. My policy agenda has three planks:. 1) Abolish all height, density and use requirements on Manhattan real estate. 2) If you make loud, pointless revving noises with your motorcycle, NYPD will seize.
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Residency is hard. It’s also when you become the doctor you’ll be. Be decisive. Be useful. Stay curious. And never settle for "good enough.".Here's the full version of what I wish every intern knew 👇.🔗
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✅ Evidence > mechanism.Flecainide suppressed PVCs. Great mechanism. Then CAST showed it killed people. Great reminder. Mechanisms are seductive. Outcomes are what matter.
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✅ Don’t let someone else do your thinking. Consults are helpful. So are attendings. But you need to think through the case first. Bring a point of view. That’s how your brain gets better.
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