Heart Attacks are Preventable!

EP418: Allergic vs Idiosyncratic vs Tolerance and Doing it Naturally

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary Dr. Warrick Bishop, a cardiologist, CEO of the Healthy Heart Network, and author, hosts this episode to address two common patient conversations: statin intolerance and the preference for natural approaches to managing cholesterol and blood pressure. The episode focuses on helping patients understand different types of medication reactions and providing a realistic framework for considering pharmaceutical interventions alongside lifestyle choices. Key Takeaways: Allergic reactions to medications (anaphylaxis) are rare but serious and warrant discontinuing the medication entirely; they involve eosinophil-driven immune responses and require immediate medical intervention with adrenaline. Idiosyncratic reactions are unpredictable and unexplained adverse responses (like blood clots from the AstraZeneca vaccine) that occur in very small populations; medications should never be reintroduced after such reactions. Tolerance to medications is the most common type of adverse reaction and is manageable by finding the individual's optimal dosage level—similar to how people have vastly different tolerances to alcohol or foods like tomatoes. The goal of reintroducing statins for intolerant patients is to identify their personal tolerance threshold through gradual dose adjustment (from very low doses to various frequencies) rather than abandoning the medication entirely. Human DNA evolved 2-3 million years ago to support survival into the late teens or early 20s, not the 70s, 80s, or 90s we now expect to live. Modern medicine and public health have allowed humans to significantly outlive their original biological blueprint, meaning we must actively use science and medication to "outsmart our DNA" for longevity. Taking beneficial medications after age 20-30 is not "giving in to Big Pharma" but rather a smart strategy to maximize both lifespan and quality of life. The philosophy is to help patients "live as well as possible for as long as possible," which means finding medication regimens that provide health benefits without making patients miserable. Read more

EP417: Cholesterol—Separating Fats from Fiction

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary: Cholesterol—Separating Fats from Fiction Dr. Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, hosts this episode to promote his new book Cholesterol Explained, co-authored with Karam Kostner and Penny Edmond. The episode aims to demystify cholesterol by explaining the difference between cholesterol as a molecule and cholesterol measured in blood tests, and to clarify common misconceptions about "good" and "bad" cholesterol in the context of heart disease prevention. Key Takeaways: Cholesterol is essential for the body and serves critical functions including building cell membranes, producing sex hormones, synthesizing vitamin D, and creating bile acids. What we measure in blood tests are lipoproteins (particles carrying cholesterol), not cholesterol itself, since cholesterol is a fat that would separate in blood without a protein carrier. LDL and HDL cholesterol are not simply "bad" and "good"—high LDL doesn't always correlate with plaque buildup, and high HDL doesn't always provide protection. Triglyceride levels are more important than previously believed, often indicating insulin resistance and poor metabolic health, and the triglyceride-to-HDL ratio is a powerful metabolic marker. Lipoprotein(a) is a genetically determined particle with very high affinity for coronary arteries and is strongly linked to premature heart disease. Imaging arteries to detect actual plaque buildup is crucial for risk assessment, as individuals can have perfect cholesterol numbers but significant arterial calcification. Statins are neither inherently good nor bad; their appropriateness depends on finding the right individual with actual arterial disease, similar to how Panadol works only for those with headaches. Predicting cardiovascular risk requires a comprehensive approach beyond blood tests, including inflammation levels, insulin resistance, blood pressure, lifestyle choices, and family history. Read more

EP416: Highlights of WCCL June 2025

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary Dr. Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, shares highlights from the Fourth World Congress of Clinical Lipidology held in Vienna in June 2025. The episode explores cutting-edge research on cholesterol management, genetic factors in longevity, and emerging therapies that challenge conventional wisdom about heart disease prevention and treatment. Key Takeaways: LDL cholesterol can only be utilized by the liver, not by other body tissues, which means there is no physiological threshold below which lowering LDL becomes harmful. Research from ancestral primates and hunter-gatherer tribes demonstrates that humans naturally maintain very low LDL cholesterol levels, much lower than modern Western populations. Lowering LDL cholesterol does not increase the risk of hemorrhagic stroke, and multiple major studies show that aggressive LDL reduction actually reduces all-cause mortality and dementia risk. Five-year cardiovascular risk assessments can be misleading; a 45-year-old with "low" short-term risk may face a 30-40% lifetime risk of heart attack, warranting early intervention based on lifetime risk rather than short-term projections. Obisetrapid, a new CETP inhibitor, uniquely both raises HDL and lowers LDL cholesterol, offering promise after previous drugs in this class caused harm. Famous "blue zones" associated with longevity in Italy (Campo di Melli and Le Bon Sul Garda) owe much of their protective effects to specific genetic mutations like ANGPTL3 that lower LDL and triglycerides, not just lifestyle factors. The APO A1 Milano genetic variant found in certain populations provides significant heart attack protection despite lower HDL levels, demonstrating that genetic factors sometimes override conventional risk markers. CRISPR gene-editing technology is approaching clinical reality and may revolutionize treatment of single-gene cholesterol disorders, with cardiology and lipidology potentially leading the world in implementing these therapies. Coronary artery disease should be viewed as a lifetime condition that begins building in young years, making early risk modification strategies far more effective than waiting for high short-term risk. Read more

EP415: Inflammation—What, How, Why?

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. EP415: Inflammation—What, How, Why? - Summary Dr. Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, hosts this episode focused on inflammation and its role in chronic disease. The episode provides a comprehensive overview of what inflammation is, its causes, detection methods, and evidence-based strategies to reduce it naturally. Dr. Bishop emphasizes that while acute inflammation is beneficial for healing, chronic low-grade inflammation is linked to heart disease, Alzheimer's, type 2 diabetes, autoimmune conditions, and various cancers. Key Takeaways: Inflammation exists in two forms: acute inflammation (helpful response to injury with visible swelling and redness) and chronic low-grade inflammation (simmering in the background, linked to major diseases) Visceral fat (fat surrounding organs) is a major driver of inflammation; a prominent belly is a strong indicator of visceral fat presence, even in people who appear overweight elsewhere Multiple lifestyle factors trigger inflammation: highly processed foods, sedentary behavior, poor sleep, chronic stress, environmental toxins, and chronic infections like gingivitis High-sensitivity C-reactive protein (HS-CRP) and erythrocyte sedimentation rate (ESR) are accessible blood tests to detect inflammation; they're inexpensive and worth requesting from your doctor Sleep is critically important for reducing inflammation; prioritizing good sleep hygiene should be a foundational health practice Physical activity reduces inflammation by burning excess energy at the cellular level, preventing oxidative stress and free radical formation Anti-inflammatory nutrition includes fiber-rich foods, eating a variety of colored vegetables, omega-3 oils, and avoiding ultra-processed foods, excess sugar, and alcohol Stress reduction techniques such as mindfulness and breathing exercises significantly lower inflammation through reduced cortisol and adrenaline release Strength training helps reduce visceral fat and improve insulin sensitivity, providing dual benefits for inflammation management While steroids can reduce inflammation short-term, natural approaches like sleep, exercise, stress management, and dietary changes are sustainable long-term solutions without side effects Read more

EP414: Modern (Metabolic) Syndrome

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary: Modern (Metabolic) Syndrome Dr. Auric Bishop, a cardiologist and CEO of the Healthy Heart Network, hosts this episode focused on understanding and reversing metabolic syndrome—a modern health crisis affecting Australians, where someone suffers a heart attack every 20 minutes. Guest Warwick discusses metabolic syndrome as a warning system for serious chronic diseases rather than a disease itself, explaining its causes and providing actionable strategies for reversal. The episode aims to empower listeners to avoid developing metabolic syndrome by understanding its risk factors and making sustainable lifestyle changes. Key Takeaways: Metabolic syndrome is diagnosed when three of five criteria are present: elevated waist circumference, high triglycerides, low HDL cholesterol, high blood pressure, and elevated fasting blood sugar. Insulin resistance sits at the core of metabolic syndrome, where cells throughout the body stop responding properly to insulin due to excessive carbohydrate exposure in modern diets. Visceral fat (fat stored around organs) is particularly dangerous and is linked to inflammation, higher blood sugar, elevated triglycerides, and reduced insulin response. Multiple lifestyle factors compound the problem: sedentary behavior, lack of exercise, sleep deprivation, chronic stress, and genetic predisposition all contribute to metabolic dysfunction. The primary intervention is reducing processed carbohydrates and adopting whole foods, with a Mediterranean diet approach being particularly effective. Regular physical activity is essential, but sustainability matters most—choose activities you genuinely enjoy to ensure long-term adherence. Even a 5-10% reduction in body weight can significantly improve insulin resistance outcomes. Stress management and quality sleep are critical, as chronic stress releases cortisol and glucose into the bloodstream, worsening metabolic dysfunction. Waist circumference (belt size) is a more honest and practical indicator of progress than weight scales. All recommended lifestyle changes—better nutrition, exercise, stress reduction, and improved sleep—address multiple aspects of metabolic syndrome simultaneously. Read more

EP413: Younger Sharper Stronger

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary: EP413 - Younger Sharper Stronger Dr. Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, hosts this episode focusing on aging well and maintaining strength. At 60 years old, Dr. Bishop addresses the critical challenge of age-related muscle loss and explores how to preserve youth, mental sharpness, and physical strength through targeted health interventions. The episode emphasizes three key body systems—the brain, bones, and muscles—that require deliberate care as we age. Key Takeaways: Brain health is interconnected with cardiovascular health; managing blood pressure, inflammation, and metabolic health protects cognitive function and reduces dementia risk. Recent research demonstrates that lowering cholesterol levels, even with statins, reduces all-cause dementia, not just vascular dementia. Insulin resistance and poor metabolic health are linked to cognitive decline, with Alzheimer's disease sometimes referred to as "type 3 diabetes." Quality sleep is essential for brain health because it allows proteins that build up in brain fluid to drain away during sleep. Both aerobic activity and strength training are linked to improved long-term brain outcomes; combine these with a Mediterranean-style diet and adequate omega-3 oils (particularly DHA for brain health). Bone mineral density should be measured through a scan rather than guessed; hidden conditions can cause osteoporosis, making screening critical for anyone over 70 or with low-impact fractures. Load-bearing exercise, vitamin D, vitamin K2, magnesium, protein, and collagen are essential for building and maintaining bone density throughout life. Muscle loss (sarcopenia) leads to frailty, but strength training can be beneficial even into one's 90s, preventing loss of independence. Protein intake should be at least 1.5+ grams per kilogram of body weight daily; strength training sessions twice weekly combined with adequate protein supports muscle growth and metabolic health. Creatine supplementation and prioritized recovery/sleep enhance both brain function and muscle development; strength training improves insulin sensitivity, posture, balance, and mitochondrial health. Read more

EP412: Talking Psoriasis with Dr Foo and Dr Smith

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary Dr. Warrick Bishop, a cardiologist and CEO of the Healthy Heart Network, hosts this episode with two expert guests: Dr. Fiona Foo, a general and interventional cardiologist from Sydney Cardiology Group, and Dr. Annika Smith, a consultant dermatologist specializing in complex inflammatory skin conditions. The episode explores psoriasis not merely as a skin condition, but as a systemic inflammatory disease with significant cardiovascular implications. Key Takeaways: Psoriasis is a chronic inflammatory skin disease affecting 2-4% of the population, characterized by rapid skin cell turnover resulting in scaly, heaped-up skin typically on elbows, knees, and scalp. Psoriasis is a systemic disorder extending far beyond the skin, affecting the heart, joints (psoriatic arthritis in ~30% of patients), brain neurochemistry (depression and anxiety), and liver, with excess cardiovascular mortality due to increased atherosclerosis rates. Only 20% of psoriasis patients are aware of the relationship between their skin condition and cardiovascular disease, and time to diagnosis is often prolonged, delaying effective treatment initiation. Psoriasis is an independent cardiovascular risk factor equivalent to diabetes, hypertension, or high cholesterol, with patients experiencing up to 50% increased risk of heart attacks and presenting with cardiac events earlier than non-psoriasis patients. Patients with psoriasis commonly have multiple concurrent cardiovascular risk factors including obesity, hypertension, diabetes, high cholesterol, and metabolic syndrome, creating a compounding effect on cardiovascular risk. Early diagnosis and prompt commencement of effective therapy are critical for altering disease trajectory and preventing comorbidities like heart disease. Disease severity markers—including body surface area involvement greater than 10%, longer disease duration, and increased inflammation—correlate with elevated cardiovascular risk, independent of the extent of visible skin involvement. Risk calculators used by clinicians may underestimate cardiovascular risk in psoriasis patients since psoriasis is not factored into standard risk assessment tools, necessitating treatment of these patients as high-risk similar to diabetic patients. Anti-inflammatory medications including statins, colchicine, and monoclonal antibodies like canakinumab should be considered for psoriasis patients due to their potential to reduce inflammation-driven atherosclerosis and cardiovascular events. Lifestyle interventions including diet, exercise, and weight management are crucial as obesity creates a vicious cycle that worsens psoriasis severity and increases inflammation, further elevating cardiovascular risk. Read more

EP411: Gut Microbiome with Prof Talley Part 2

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary Introduction: Dr. Warrick Bishop, a cardiologist and CEO of the Healthy Heart Network, hosts this episode with Professor Nicholas Talley, a distinguished gastroenterologist, epidemiologist, and researcher. This is part two of a discussion on the gut microbiome, expanding on the fascinating connections between gut health and systemic diseases including heart disease, diabetes, and Parkinson's disease, with a focus on mechanisms like leaky gut and inflammation. Key Takeaways: The "leaky gut" phenomenon is now scientifically validated: damage to the gut barrier allows bacterial factors, food particles, and inflammatory molecules to enter the bloodstream, driving chronic diseases including high blood pressure and atherosclerosis rather than salt alone causing these conditions. A high-fiber diet is the most effective and evidence-based strategy to maintain microbiome health and diversity; commercial microbiome testing kits are generally unreliable and not worth the money. Probiotics have limited effectiveness because most organisms die before consumption and don't successfully repopulate the gut; a healthy diet provides far greater benefit than probiotic supplements. Prebiotics (like dietary fiber) are more beneficial than probiotics because they selectively promote growth of beneficial bacteria while inhibiting harmful ones. Ultra-processed foods cause leaky gut and alter the microbiome in unhealthy ways; minimizing packaged foods and maximizing whole fruits and vegetables is critical for overall health. Antibiotics have significant long-term negative effects on microbiome diversity that can persist for months or longer, with multiple antibiotic courses potentially increasing risk of inflammatory bowel disease and other chronic conditions. The gut microbiome extends from the lips through the entire gastrointestinal tract (approximately 30 feet), meaning oral health issues like periodontitis can have systemic effects on cardiac health, as demonstrated by cases of atrial fibrillation resolving after gum disease treatment. Inflammation is a key driver of virtually all chronic diseases, from heart disease to cancer, making microbiome health crucial for disease prevention. Read more

EP410: Gut Microbiome with Prof Talley Part 1

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. EP410: Gut Microbiome with Prof Talley Part 1 Introduction Dr. Warrick Bishop, a cardiologist and CEO of the Healthy Heart Network, hosts this episode featuring Professor Nicholas Talley, a Distinguished Laureate Professor of Medicine at Newcastle University who is a gastroenterologist, epidemiologist, researcher, and author. The episode explores the gut microbiome—the trillions of organisms living in our digestive system—and its emerging role in affecting multiple aspects of human health and disease prevention. Key Takeaways: The gut microbiome consists of trillions of organisms and their associated genes that colonize our bodies at birth, primarily from our mothers and birth environment, with composition being influenced by delivery method (vaginal vs. cesarean section). Microbiome composition is shaped throughout life by diet, exercise, medications, and environmental factors, and these organisms release chemicals and metabolites that are absorbed by the body and affect functions beyond just the gut. Obesity is associated with reduced microbiome diversity, and while animal models show that manipulating the microbiome can lead to weight loss, this approach has not yet been successfully replicated in humans. The relationship between microbiome changes and disease follows a bidirectional "chicken and egg" pattern—body changes can alter organisms, and organism changes can affect the body, making causation difficult to establish. Fecal microbial transfer (FMT) and prebiotics/probiotics are being tested as therapeutic approaches, though most over-the-counter probiotics are ineffective; results vary significantly depending on which donor organisms are used. Irritable bowel syndrome (IBS) treatment with FMT has shown mixed results, with some studies demonstrating dramatic symptom improvement while others failed, highlighting the critical importance of identifying the right organisms. Early research on FMT for Parkinson's disease is promising, with some trials showing significant improvements in disease symptoms, suggesting neurodegenerative diseases may become treatable through microbiome-based therapies. Oral bacteria can migrate to other parts of the digestive system where they don't belong; research has identified streptococcus from the mouth in the small intestine of patients with functional dyspepsia, suggesting misplaced organisms may drive disease. The microbiome field is complex because millions of organisms interact with each other and the body simultaneously, making it difficult to isolate which specific organisms drive particular health outcomes. Within the next 50 years, microbiome research may lead to cures for many diseases by identifying and treating the specific organisms responsible for disease development. Read more

EP409: 10 Good Things About Sauna

Welcome to my podcast. I am Doctor Warrick Bishop, and I want to help you to live as well as possible for as long as possible. I’m a practising cardiologist, best-selling author, keynote speaker, and the creator of The Healthy Heart Network. I have over 20 years as a specialist cardiologist and a private practice of over 10,000 patients. Episode Summary Introduction: Dr Warrick Bishop, a cardiologist, author, and CEO of the Healthy Heart Network, explores the surprising health benefits of regular sauna use. After a recent sauna experience on a boat in Tasmania's Derwent River, Dr Bishop dives into 10 evidence-based reasons why saunas are beneficial for overall health and longevity. The episode emphasizes how sauna use complements a heart-healthy lifestyle by addressing cardiovascular, metabolic, and mental wellness. Key Takeaways: Regular sauna users have lower risk of heart attack and stroke due to heat mimicking moderate exercise by increasing heart rate, circulation, and vasomotor response in arteries. Saunas lower both systolic and diastolic blood pressure in people with mild hypertension by improving endothelial function and promoting vasodilation. Sauna use improves insulin sensitivity and glucose metabolism, reducing insulin resistance and inflammation in the body. Post-workout sauna sessions accelerate muscle recovery and reduce soreness, potentially through improved circulation and increased growth hormone levels. Regular sauna use is associated with reduced risk of Alzheimer's disease and dementia through reduced inflammation, improved blood flow, and increased brain-derived neurotrophic factor (BDNF). Saunas induce heat shock proteins that repair damaged cells and protect against cellular stress, contributing to cellular resilience and longevity. Sauna use reduces chronic inflammation by lowering high-sensitivity CRP levels, an important inflammatory marker. Post-sauna core temperature drops trigger natural sleep signals, improving sleep quality and duration. Heavy sweating during sauna may help eliminate heavy metals and environmental toxins, though scientific evidence remains limited. Saunas reduce stress and improve mental clarity, with benefits including relaxation, rejuvenation, and improved cognitive function. Read more