Heart Attacks are Preventable!

EP234: My Meditation Journey

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 is a practicing cardiologist and founder of the Healthy Heart Network who is passionate about patient education and understanding heart health. In this episode, Dr. Bishop shares his personal journey with meditation, inspired by previous podcast interviews with James Z. G. Buckley, a world-renowned meditation and hypnosis expert. He invites listeners to explore meditation as a transformative practice for overall wellbeing, despite initially believing he was the "last person in the world who would ever meditate." Key Takeaways: Meditation reduces stress and anxiety, with measurable effects on both mental wellbeing and physical health markers like blood pressure and heart rate. A 21-day meditation challenge can produce significant results in awareness of inner peace and ability to relate to the external world. Guided meditation is an accessible entry point for beginners, with Dr. Bishop recommending 10 minutes upon waking, before sleep, and during the day as a sustainable practice. Meditation activates the parasympathetic nervous system, which promotes healing processes and can drive nearly a thousand different DNA-based or genetic processes within the body. Box breathing or triangular breathing techniques provide quick mental stabilization and focus, a method used by military personnel and professional athletes. Meditation improves energy levels, enhances happiness, and promotes better sleep quality when practiced regularly, even with a partner. Holistic health requires caring for both body and mind; many people focus on exercise, diet, and sleep while neglecting mental wellness through practices like meditation. Skepticism about meditation is common, but personal experience often reveals its profound benefits for overall wellbeing and patient care capacity. Read more

EP233: Garlic, Devices, Renal Denervation, and Appolo

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. Podcast Summary Introduction Dr. Warrick is a practicing cardiologist and author dedicated to educating patients about heart health and the latest advances in cardiac care. In this episode, he discusses four recent cardiovascular breakthroughs: aged black garlic's blood pressure effects, smart wearable devices for detecting atrial fibrillation and sleep apnea, renal artery denervation for treatment-resistant hypertension, and a new RNA-based therapy for lowering lipoprotein(a). Key Takeaways: Aged black garlic (ABG) containing S-allylcysteine (SAC) demonstrated the ability to reduce diastolic blood pressure by approximately 6 mmHg in a Spanish clinical trial of 67 healthy men. A 5-6 mmHg reduction in diastolic blood pressure correlates to roughly 40% reduction in stroke risk and 30% reduction in heart attack risk, making aged black garlic's effects potentially very significant. Wearable smart devices using photoplethysmography (PPG) technology can effectively detect atrial fibrillation, identifying 0.4% prevalence in a low-risk population over four years with 93% detection accuracy. Advanced algorithms in smartwatches can now assess multiple cardiovascular and respiratory parameters including obstructive sleep apnea, with detection of OSA in approximately 18,000 out of 900,000 tested users. The SPIRAL hypertension trial demonstrated that renal artery denervation (ablating sympathetic nerves in renal arteries) maintains its blood pressure-lowering effects of 10 mmHg systolic and 5 mmHg diastolic reduction at three years post-intervention. The SPIRAL trial used a sham procedure as a placebo control, ensuring results exceeded pure placebo effects and validating the true effectiveness of the intervention. The Apollo trial revealed that a small interfering RNA (siRNA) therapy achieved nearly 98% lowering of lipoprotein(a), a dangerous LDL-like particle associated with premature coronary artery disease and aortic stenosis. The siRNA therapy additionally provided a 25% reduction in LDL cholesterol, offering dual cardiovascular benefits in treating this emerging high-risk cholesterol particle. Read more

EP232: Chatting About Chocolate

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. Podcast Summary Dr. Warrick Bishop is a practicing cardiologist and author dedicated to educating patients about heart health through his podcast and videocast station. In this episode, recorded around Easter time, Dr. Bishop explores the history, composition, and health implications of chocolate consumption. He examines both the potential benefits suggested by recent research and the practical cardiovascular and metabolic concerns associated with chocolate's high sugar and fat content. Key Takeaways: Chocolate originates from cacao, a tree seed traced back to Olmec civilizations around 1,000 years before Christ, which later influenced Maya and Aztec cultures in Mexico. Cacao is the raw ingredient that becomes cocoa once roasted; the distinction is important as they refer to different stages of processing. Chocolate contains high levels of added fat and sugar, which contribute to calories linked to weight gain, elevated blood pressure, diabetes risk, and coronary artery disease. Research suggesting chocolate's antioxidants and potential cholesterol-lowering effects is not particularly robust, and Dr. Bishop would not recommend chocolate consumption as a treatment for high cholesterol. Studies on chocolate's benefits (such as reduced brain decline or stroke risk) are difficult to interpret due to confounding factors, as chocolate consumers may also follow other healthy lifestyle habits. A 2016 study suggested 30 grams of chocolate daily may support healthy fetal growth during pregnancy, though moderation remains advisable. Chocolate should be consumed in moderation as a treat, with recommendation of enjoying it only once or twice yearly, particularly for those trying to lose weight or at risk of diabetes. For individuals focused on weight loss or diabetes prevention, limiting chocolate consumption is more beneficial than relying on any potential health benefits from its consumption. Read more

EP231: Cardiac Devices

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. Podcast Summary Introduction Dr. Warrick Bishop is a practicing cardiologist and author dedicated to educating patients about heart health, believing that informed patients receive better care. In this episode, he discusses various interventions and technologies available to treat heart failure, ranging from established medical devices to cutting-edge and experimental approaches. The episode explores how both current and future technologies can help patients with severely compromised cardiac function. Key Takeaways: Biventricular pacemakers synchronize both sides of the heart to restore symmetric contractions, helping hearts that squeeze inefficiently due to lack of coordination. Implantable cardioverter-defibrillators (ICDs) function like portable paddles placed under the skin with wires in the heart, automatically delivering electrical shocks to prevent sudden cardiac death when needed. Ventricular assist devices (VADs) are portable pumps that can be carried like a small device, supporting heart function while patients heal or await heart transplantation. Heart transplantation remains an option for patients with hearts beyond repair, though it is a major surgical procedure. Stem cell therapy shows promise as a future treatment, using undifferentiated cells to regenerate damaged heart tissue and restore normal cardiac function. Laboratory-grown heart cells can be generated in petri dishes and implanted back into damaged hearts to repair tissue. Xenotransplantation using genetically modified pig hearts is being actively developed to overcome organ rejection and address the shortage of human donor hearts. Despite these advanced technologies, lifestyle modifications including exercise, sensible diet, and weight control remain foundational treatments for heart failure. Medications continue to be essential tools that support heart function and maintain proper fluid balance in cardiac patients. Treatment decisions regarding devices and operations should be guided by individual cardiologists based on each patient's specific circumstances. Read more

EP230: No Longer Fearful

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. Introduction Dr. Eric Bishop is a practicing cardiologist and passionate educator dedicated to helping patients understand heart health through accessible education. In this episode, Dr. Bishop demystifies cardiac failure—a condition that causes significant anxiety in many patients—by explaining what it actually means, how it develops, and the importance of prevention. The episode emphasizes that educated patients receive better healthcare outcomes and that understanding the physiological mechanisms behind heart failure is key to managing the condition effectively. Key Takeaways: Cardiac failure is characterized primarily by shortness of breath (especially during exertion) and fluid retention, typically beginning in the feet and ankles. The heart can fail in two distinct ways: through reduced contractility (inability to pump properly) or through impaired relaxation (stiffness that prevents proper filling). Heart failure results from an evolutionary mismatch—the body's ancient survival mechanism interprets reduced blood flow as blood loss and retains fluid, which paradoxically worsens the condition by overloading an already failing heart. Cardiac failure is more prevalent in aging populations and in patients with pre-existing heart conditions such as hypertension, previous heart attacks, or prior cardiac surgery. Treatment focuses on two main goals: supporting heart function and removing excess fluid from the body. Prevention is more effective than treatment—maintaining a healthy lifestyle, regular exercise, controlled blood pressure, and reduced cardiovascular risk factors are the best ways to avoid developing cardiac failure. Any patient diagnosed with cardiac failure should consult with a cardiologist for proper evaluation and personalized treatment planning. Read more

EP229: Tanya And Warrick—Hearts 4 Hearts Interview

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. Podcast Summary Introduction Dr. Warrick Bishop, a practicing cardiologist and author dedicated to patient education in heart health, interviews Tanya Hall, CEO of Hearts for Hearts, a national charity supporting Australians living with heart disease and arrhythmias. The episode explores Hearts for Hearts' mission of support, education, and advocacy for heart rhythm disturbance patients, with Tanya sharing both the organization's work and her personal journey as a heart patient herself. Key Takeaways: Hearts for Hearts is a national charity specializing in supporting, educating, and advocating for Australians with heart disease, particularly arrhythmias, with services extending to New Zealand. The organization operates heart buddy groups, runs national screening events (such as AF Awareness Week), and conducts advocacy work with federal government to improve patient access to therapies. A key advocacy focus during COVID-19 was securing funding for remote monitoring of patients with pacemakers and defibrillators, allowing cardiologists to monitor patients from home safely. Hearts for Hearts has successfully advocated for increased access to catheter ablation treatment for atrial fibrillation and arrhythmias in hospitals, reducing patient wait times. The organization was founded by Tanya Hall, who is herself a heart patient and sought information and support during a three-year period of hospitalization in her early 30s, discovering a significant gap in available resources. Hearts for Hearts serves thousands of members through multiple support modalities, including in-person peer support groups, telephone support, and virtual Zoom meetings. The organization develops patient education materials through a rigorous process involving patient focus groups, medical advisory committees, and patient review to ensure materials are accessible and understandable. Hearts for Hearts supports patients with various heart conditions including atrial fibrillation, ventricular tachycardia, and congenital heart disease, linking patients with similar conditions to prevent isolation. The screening events run by Hearts for Hearts have successfully identified undiagnosed atrial fibrillation and prevented strokes, representing a significant public health impact. Read more

EP228: Covid-19 and Arrythmia

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. Podcast Summary Dr. Warrick Bishop is a practicing cardiologist who hosts educational podcasts aimed at helping patients understand their heart health. In this episode, Dr. Bishop addresses common questions from patients regarding COVID-19 and its specific implications for those with arrhythmias and other cardiac conditions. The episode focuses on clarifying misconceptions and providing practical guidance for cardiac patients during the pandemic. Key Takeaways: Patients with well-controlled arrhythmias and no other comorbidities are not necessarily at increased risk from COVID-19, as the virus primarily affects those with diminished immunity. Atrial fibrillation in isolation does not significantly increase COVID-19 risk, but when combined with other conditions like hypertension, diabetes, or heart failure, it becomes a marker for higher risk. Ventricular arrhythmias (rhythms from the heart's lower chambers) are more concerning as they typically indicate underlying heart dysfunction and carry increased risk for poor COVID-19 outcomes. Pacemaker patients are not inherently at higher risk from COVID-19 and should utilize remote monitoring options when available to avoid hospital exposure. Patients with defibrillators or cardiac resynchronization devices have compromised left ventricular function and should exercise particular caution due to elevated COVID-19 risk. Current evidence does not support discontinuing ACE inhibitor or angiotensin II blocker medications due to COVID-19 fears, despite theoretical concerns about lung receptor interactions. The hypertension rate observed in severe COVID-19 cases matches the baseline hypertension rate in general populations, suggesting no specific increased risk. The virus can survive up to 72 hours on hard surfaces, 24 hours on soft surfaces, and several hours in the air, making proper hygiene and handwashing essential preventive measures. Soap and alcohol-based products effectively combat the virus due to its lipid coating, as do bleach and peroxide solutions. Read more

EP227: What Are NAFLD and NASH?

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. Podcast Summary Introduction Dr. Warrick Bishop is a practicing cardiologist and author dedicated to improving patient care through health education. In this episode, he discusses non-alcoholic fatty liver disease (NAFLD) and its inflammatory progression to non-alcoholic steatohepatitis (NASH), conditions that are becoming increasingly prevalent as they now surpass alcoholic fatty liver disease as the leading cause of liver fat accumulation. Key Takeaways: NAFLD (non-alcoholic fatty liver disease) is fat accumulation in the liver unrelated to alcohol consumption, while NASH represents the inflammatory stage of this disease that can progress to cirrhosis. Morbid obesity is the single biggest driver of NAFLD, and rising obesity rates in communities are directly increasing the incidence of fatty liver disease. Insulin resistance, stemming from obesity or type 2 diabetes, causes a shift in free fatty acid release and accumulation within liver cells, distorting liver architecture and function. Fructose consumption significantly contributes to fatty liver development; while fruit is healthy, excessive fructose from fruit juice, fruit wraps, and processed foods can overload the liver in people at risk. NAFLD often produces no symptoms, but central obesity (fat around the midsection) and abnormal liver enzyme blood tests may indicate fatty liver disease. Progressive liver disease can develop serious complications including cirrhosis, liver failure, itching, bleeding problems, jaundice, and ultimately requires transplantation to survive. Weight reduction is the most critical intervention; Dr. Bishop recommended bariatric surgery for a patient whose dietary efforts failed, resulting in 35+ kilograms of weight loss and improved liver function. Ezetimibe, a cholesterol-lowering medication, has a protective effect on NAFLD through its action on the NCP1L2 receptor and can be used alongside statins. Statins are not detrimental to NAFLD progression and may offer slight protective benefits, contrary to previous concerns. Awareness and early intervention are essential, as NAFLD is an underrecognized obesity complication that will increasingly impact mortality if left unaddressed. Read more

EP226: Dog Therapy and Exercise vs Fish Oil

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. Podcast Summary Introduction: Dr. Warrick Bishop is a practicing cardiologist and author dedicated to educating patients about heart health, believing that informed patients receive better care. In this episode, he discusses two recent research studies: one examining dog therapy in emergency departments and another investigating exercise and fish oil supplementation for men at high risk of heart failure. Key Takeaways: A randomized controlled trial from Saskatchewan, Canada demonstrated that just 10 minutes of dog therapy in emergency departments produced clear, measurable reductions in pain and anxiety compared to standard care (100 patients in each arm). Animal-related therapies like dogs and cats show growing evidence of helping patients alleviate anxiety, fears, and concerns, with potential applications beyond emergency departments to hospital wards, day units, and chemotherapy suites. A University of Texas study found that high-intensity interval training significantly improved physical capacity and VO2 max in overweight, hypertensive men at risk for heart failure, but did not result in weight loss. Exercise alone, without dietary changes, is unlikely to produce weight loss even though it provides important cardiovascular benefits; addressing diet is essential for weight management. Fish oil supplementation (1.6 grams of omega-3 fatty acids) showed no measurable benefits in the study, though fish oil may be beneficial for high-risk cardiac patients and those with elevated triglycerides when using specific EPA subfraction. The research supports the principle "sweat it out, don't pill it out"—lifestyle modification through exercise and diet is more effective for high-risk heart failure patients than pharmaceutical supplementation alone. Read more

EP225: Interview With Rob Zecchin—Cardiac Rehabilitation

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. Podcast Summary Introduction Dr. Warrick Bishop, a practicing cardiologist and patient education advocate, hosts this episode featuring Rob Zekin, a rehabilitation nurse and president of the New South Wales cardiac rehabilitation organization. With over three decades of experience in cardiac nursing and rehabilitation program development, Rob discusses the critical role of cardiac rehabilitation in helping patients recover physically and psychologically from cardiac events while addressing underrepresented populations and conditions that often lack adequate rehabilitation support. Key Takeaways: Cardiac rehabilitation is an accelerated recovery process—both physical and mental—that provides holistic support including education, medical care, and exercise guidance for patients recovering from cardiac events like heart attacks, stents, or bypass surgery. Exercise is accessible medicine; patients don't need gym memberships or special equipment—simply walking in good shoes can maintain cardiovascular fitness at a beneficial level. Family and community involvement is essential to rehabilitation success, particularly for dietary changes, lifestyle modifications, and identifying genetic cardiac risk in children and siblings of patients with premature cardiac disease. Aboriginal and Torres Strait Islander cardiac rehabilitation programs benefit significantly from culturally tailored approaches, including Aboriginal health workers, evening classes, and family participation rather than individual-only interventions. Women are underrepresented in cardiac rehabilitation despite experiencing gender-specific conditions like spontaneous coronary artery dissection (SCAD) and Takotsubo cardiomyopathy (stress cardiomyopathy) that require specialized psychological and physical support. Individualized treatment is more effective than generic group programs; rehabilitation must account for each patient's starting point, specific cardiac event, type of intervention, and personal circumstances rather than applying one-size-fits-all protocols. Bypass surgery patients show higher program adherence because the visible scar serves as a daily reminder of the need for behavior change, while stent patients are often less compliant because they're told they're "fixed" and underestimate ongoing cardiac risk. Stents provide temporary blood flow improvement, not a permanent cure; patients require ongoing medication, lifestyle modifications, and rehabilitation to prevent clot formation and disease progression. Under-resourced rehabilitation programs limit access through restricted hours, inadequate staffing, and lack of after-hours or weekend availability, preventing working patients from participating despite the clear cost-benefit of preventing future cardiac events. Standard cardiac rehabilitation programs typically last 6-12 weeks (or longer for heart failure patients), with duration determined individually based on the patient's deconditioning level and recovery needs rather than a fixed timeline. Read more