Office Hours: Cholesterol and Heart Disease — What I’ve Changed My Mind About
Episode
30 min
Read time
2 min
Topics
Health & Wellness, Science & Discovery
AI-Generated Summary
Key Takeaways
- ✓ApoB Testing: Apolipoprotein B measures the actual number of harmful cholesterol particles in blood, not just their weight. Only 1% of cholesterol tests ordered by doctors include this marker, yet cardiology guidelines now recognize it as a causal factor for heart disease. Function Health includes ApoB in their standard panel for tracking metabolic health.
- ✓Heart Attack Paradox: In a study of 136,000 people who arrived at emergency rooms with heart attacks, 75% had normal LDL cholesterol levels. Nearly all had abnormal triglyceride to HDL ratios. This ratio should be one to one or less. A ratio of five to one indicates extremely high heart attack risk regardless of normal LDL numbers.
- ✓Skinny Fat Syndrome: Twenty percent of normal weight people have insulin resistance and face the same heart disease risk as obese individuals. This explains why 93% of Americans show metabolic dysfunction despite only 75% being overweight. Body composition matters more than body mass index. Visceral belly fat drives inflammation and cholesterol oxidation that damages arteries.
- ✓Lipoprotein Little A: One in five people have elevated LP(a), a genetic cholesterol marker that independently increases heart disease risk. No current treatments directly lower it effectively, though medications are in development. People with high LP(a) must optimize all other risk factors including blood sugar, blood pressure, exercise, and eliminate refined carbohydrates to compensate for genetic vulnerability.
- ✓Sugar Drives Inflammation: Americans consume approximately one pound of sugar and flour daily, totaling 152 pounds of sugar and 132 pounds of flour annually per person. This drives insulin resistance, which creates small dense LDL particles that penetrate artery walls. High sensitivity C-reactive protein predicts heart disease better than LDL cholesterol according to Harvard and Cleveland Clinic data.
What It Covers
Dr. Mark Hyman explains why he changed his approach to cholesterol and heart disease based on new research. He argues that insulin resistance and inflammation, not cholesterol levels alone, drive heart disease risk. He details which lab tests actually predict heart attacks and how metabolic dysfunction affects 93% of Americans.
Key Questions Answered
- •ApoB Testing: Apolipoprotein B measures the actual number of harmful cholesterol particles in blood, not just their weight. Only 1% of cholesterol tests ordered by doctors include this marker, yet cardiology guidelines now recognize it as a causal factor for heart disease. Function Health includes ApoB in their standard panel for tracking metabolic health.
- •Heart Attack Paradox: In a study of 136,000 people who arrived at emergency rooms with heart attacks, 75% had normal LDL cholesterol levels. Nearly all had abnormal triglyceride to HDL ratios. This ratio should be one to one or less. A ratio of five to one indicates extremely high heart attack risk regardless of normal LDL numbers.
- •Skinny Fat Syndrome: Twenty percent of normal weight people have insulin resistance and face the same heart disease risk as obese individuals. This explains why 93% of Americans show metabolic dysfunction despite only 75% being overweight. Body composition matters more than body mass index. Visceral belly fat drives inflammation and cholesterol oxidation that damages arteries.
- •Lipoprotein Little A: One in five people have elevated LP(a), a genetic cholesterol marker that independently increases heart disease risk. No current treatments directly lower it effectively, though medications are in development. People with high LP(a) must optimize all other risk factors including blood sugar, blood pressure, exercise, and eliminate refined carbohydrates to compensate for genetic vulnerability.
- •Sugar Drives Inflammation: Americans consume approximately one pound of sugar and flour daily, totaling 152 pounds of sugar and 132 pounds of flour annually per person. This drives insulin resistance, which creates small dense LDL particles that penetrate artery walls. High sensitivity C-reactive protein predicts heart disease better than LDL cholesterol according to Harvard and Cleveland Clinic data.
Notable Moment
Hyman describes how dietary guidelines reversed course in 2015 when the committee declared cholesterol is no longer a nutrient of concern, essentially admitting decades of advice to avoid eggs and dietary cholesterol was wrong. This reversal came after 72 studies showed no correlation between saturated fat intake and heart disease, contradicting standard medical training.
Episode Transcript
Welcome to office hours. This is our dedicated one on one space to go deeper, get clear, and explore what truly moves the needle for your health. I'm doctor Mark Hyman, and each week, we're gonna pull back the curtain and share the insights, the research, the lessons that don't always make it into our conversations with guests. Because at the end of the day, you are the CEO of your own health. And for many of you, your family's health too. And you might not feel it all the time, but you have far more power and agency than you realize. I'm glad you're here. This episode is brought to you by Function Health, empowering you to live one hundred healthy years with over 160 lab tests at just $365 a year. Sign up today at functionhealth.com/mark and use code mark twenty twenty six to get $50 towards your membership. Hey, everybody. You know, from time to time, science changes, and I change. I look at the data. I see what's changed, and I change my thinking. I change my practice. And I just don't wanna keep you up to date because science is an evolving process. We're constantly doing research. We're constantly learning, and old ideas may not always be the right ideas. And, even though they can be pretty strong, like, for example, that low fat diets are good for heart disease. Well, that ain't true. And we know what happened with that, with snack boat cookies, and we went low fat, and we all got fat. And we all got diabetes, and we all got more heart disease. So we have to look at the things that we hold on to, like these sacred idols, and we have to let them go if the science doesn't prove that they're true anymore. So today, I wanna talk about something I've changed my mind about over the years, cholesterol and heart disease. Now heart disease is the number one killer of Americans since the nineteen fifties, and yet so many are still approaching it with the same outdated framework that we've used for decades. Now for a long time, cholesterol was seen as the enemy. You gotta get it as low as possible. You gotta avoid fat. You gotta take a statin. And that was what we're all told. That's what doctors are trained in, and that's the story most people still believe. You go to your doctor, they check your labs, they do a cholesterol test, and they do the wrong one, by the way. And that's why at Function Health, we do the right ones, including ones you never get from your doctor, like APOB, which is far more important than all the other cholesterol tests, and LP delay, which most people don't check, which is highly important genetic marker. So you gotta know your numbers, but you gotta know the right number. So doctors check your old cholesterol number. They see your LDL high. They …
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“Function Health includes ApoB in their standard panel for tracking metabolic health.”
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