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. Auric Bishop, a cardiologist and CEO of the Healthy Heart Network, hosts this educational episode focused on heart health and cardiovascular disease prevention. In this episode, Dr. Eric Bishop discusses the brain natriuretic peptide (BNP) system and its role in heart protection, followed by an in-depth explanation of cholesterol-carrying lipoprotein particles: LDL, HDL, and VLDL. The episode aims to help listeners understand these critical cardiovascular markers to better manage their heart health.

Key Takeaways:

• Brain natriuretic peptides are chemical messengers released by the heart under strain that reduce cardiac workload by promoting fluid loss, lowering blood pressure, dampening sympathetic nervous system activity, and reducing inflammation and scarring.

• BNP testing is valuable in emergency departments to distinguish whether shortness of breath is caused by lung or heart problems, though it's only rebated in hospital settings and must be paid out-of-pocket in community clinics.

• Neprilysin inhibitors (such as Sacubitril found in Entresto) block the breakdown of natriuretic peptides, keeping beneficial BNP levels elevated—an important treatment for cardiac failure with reduced left ventricular function.

• LDL cholesterol is the primary particle responsible for plaque formation in arteries; reducing LDL by one millimole per liter in high-risk patients provides a 20% relative risk reduction.

• HDL is a reverse transport particle that picks up cholesterol from the periphery and returns it to the liver; however, there are approximately 200 different HDL variants, making simple blood tests insufficient to determine HDL quality.

• The triglyceride-to-HDL ratio is a more clinically useful indicator than absolute HDL values, as elevated triglycerides with lowered HDL suggests a hyperinsulinemic state and metabolic syndrome.

• VLDL particles are the main carriers of triglycerides and are best measured through fasting blood tests, as VLDL levels spike significantly after meals.

• Fasting lipid panels should be combined with fasting glucose and insulin measurements, which can be analyzed using the HOMA (Homeostatic Model Assessment) equation to evaluate insulin resistance and provide a more holistic cardiovascular risk assessment.