ApoC‑3, a protein that slows fat metabolism, may predict longevity better than LDL cholesterol. People with genetic mutations reducing ApoC‑3 live longer, and a ketogenic diet cut levels by over 50% in two weeks.
Here's a provocative question: if lower LDL doesn't predict longevity, what does? Let me introduce you to a little-known but highly modifiable biomarker called ApoC-3. ApoC-3 is a small protein that slows how fast you clear out fat triglycerides from the blood. So in simple terms, it acts like a brake on fat metabolism. And here's the fascinating part: people with genetic mutations that lower ApoC-3 activity live longer on average. That longevity signal, we don't see it in people with mutations that lower LDL cholesterol. And here's the best part: ApoC-III is highly modifiable. Reducing carbohydrate intake, especially fructose, can lower ApoC-III levels. For example, in one study, a ketogenic diet dramatically reduced ApoC-III levels over 50% in just 2 weeks in humans. So maybe it's time for cardiology to shift the spotlight. Now, if you want more nuances and practical, actionable insights to improve your heart health today and potentially longevity, join me in the deep dive. A la Apo, see you there.
