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#012 Dr. Ronald Krauss on LDL Cholesterol, Particle Size, Heart Disease & Atherogenic Dyslipidemia

Aug 27, 2015 1h 23m 19 insights
<p><strong>Dr. Ronald Krauss</strong></p> <p>Dr. Ronald Krauss, M.D. is the director of atherosclerosis research at Children's Hospital Oakland Research Institute, Adjunct Professor at UCSF and UC Berkeley. Dr. Krauss is really one of the pioneering scientists that changed the way we all think about cholesterol and saturated fat. He developed an assay that allows the quantification of low density lipoprotein particle size and concentration (known to the wider world as LDL cholesterol) based on a technique which determines the size of the particle based on physics...meaning the speed at which it flies through the air.</p> <p class="p1"><strong>In this episode, we discuss...</strong></p> <ul> <li class="p1"><strong>(00:00)</strong> Introduction</li> <li class="p1"><strong>(03:58)</strong> An overview of lipoproteins – HDL, LDL, and VLDL<span class="Apple-converted-space"> </span></li> <li class="p1"><strong>(09:32)</strong> Cholesterol is a "passenger" on a train <span class="Apple-converted-space"> </span></li> <li class="p1"><strong>(12:09)</strong> LDL vs HDL - why one is dangerous and the other isn't</li> <li class="p1"><strong>(17:42)</strong> Raising HDL doesn't reduce heart disease risk the same way as lowering LDL<span class="Apple-converted-space"> </span></li> <li class="p1"><strong>(19:13)</strong> Leaky gut and inflammation increase VLDL production to protect the body</li> <li class="p1"><strong>(30:38)</strong> The misconception that dietary cholesterol significantly raises blood cholesterol</li> <li class="p1"><strong>(40:56)</strong> Saturated fats vs carbohydrates in raising cholesterol and CVD risk</li> <li class="p1"><strong>(53:08)</strong> Statins are a reliable, but imperfect, therapy for lowering CVD risk</li> <li class="p1"><strong>(01:08:20)</strong> Measuring cholesterol particle size refines risk assessment and informs medication use</li> </ul> <p><span style="font-weight: 400;">If you're interested in learning more, you can read the <a href="https://www.foundmyfitness.com/episodes/ronald-krauss">full show notes here</a>.</span></p> <p><span style="font-weight: 400;">Join over 300,000 people and get the latest distilled information straight to your inbox weekly:</span> <span style="font-weight: 400;"><a href="https://www.foundmyfitness.com/newsletter">https://www.foundmyfitness.com/newsletter</a></span></p> <p><span style="font-weight: 400;">Become a FoundMyFitness premium member to get access to exclusive episodes, emails, live Q+A's with Rhonda and more:</span> <a href="https://www.foundmyfitness.com/crowdsponsor"><span style="font-weight: 400;">https://www.foundmyfitness.com/crowdsponsor</span></a></p>
Actionable Insights

1. Focus on Dietary Patterns

When considering diet and heart disease risk, focus on overall dietary patterns and the context in which nutrients are consumed, rather than individual nutrients in isolation.

2. Limit High Carbohydrate Diets

Limit high carbohydrate diets, as they can promote the production of VLDL particles that lead to small, dense LDL, high triglycerides, and lower HDL, contributing to atherogenic dyslipidemia.

3. Reduce Simple Sugars, Fructose

Reduce consumption of simple sugars and fructose, especially added sugars, as they are considered chief culprits in promoting atherogenic dyslipidemia.

4. Prefer Fructose in Whole Fruits

Consume fructose in the context of whole fruits, as the fiber and overall packaging buffer its metabolic effects, making it much less problematic than concentrated added sugars.

5. Avoid Processed Starches

Avoid processed starches because they add calories without providing the nutrients found in fiber-rich whole grains.

6. Recognize Added Sugars Problem

Recognize that added sugars are a significant health problem, a point of consensus even among those who previously focused solely on fat as a culprit.

7. Prioritize Lifestyle Interventions

Work on controllable lifestyle factors, including diet and exercise, to reduce heart disease risk and promote overall health, especially for residual risk not addressed by other means.

8. Physicians Monitor LDL Particles

Physicians should monitor LDL particle measurements, especially smaller particles, as the primary target for drug treatment efficacy, rather than solely relying on LDL cholesterol levels.

9. Use Particle Analysis for Treatment Decisions

Use LDL particle analysis in clinical practice, particularly when making treatment decisions for patients considering interventions, as it provides crucial information for targeting treatments like statins or diet.

10. Use Particle Analysis for Borderline Risk

For individuals with borderline LDL cholesterol levels (e.g., 115-120 mg/dL) or those on the cusp of treatment decisions, use LDL particle analysis to refine risk assessment and target appropriate interventions.

11. Treat Very High LDL with Statins

If LDL cholesterol is 190 mg/dL or greater, statin therapy is almost always indicated due to sufficiently high lifelong heart disease risk, often linked to genetic abnormalities, making particle measurement less critical for the initial treatment decision.

12. Consider Statins for High Risk

If you remain at high risk for heart disease, consider statin prescriptions as they have a statistically real effect on reducing risk, though lifestyle changes are also important.

13. Use Precision Medicine for Statins

Advocate for using precision medicine, genomic medicine, and refined laboratory tools like particle measurements to better identify individuals most likely to benefit from statin use and minimize adverse effects like type 2 diabetes.

14. Differentiate Risk Prediction, Treatment

Do not confuse the ability to predict risk using standard measurements with what biological factors should be targeted for treatment, as they are not always the same.

15. Assess Absolute Heart Disease Risk

When evaluating heart disease risk and potential treatment benefits, consider absolute risk rather than just relative risk, as a significant relative increase on a very low baseline risk still results in a small absolute risk.

16. Broaden Diet’s Health Impact

Understand that dietary regulators of heart disease risk extend beyond just blood cholesterol, implying a need to consider other factors.

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