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. Warwick Bishop is a practicing cardiologist and author dedicated to improving patient care through heart health education. In this episode, he provides a comprehensive breakdown of cholesterol tests, explaining what each component measures and why understanding these numbers matters for assessing cardiovascular risk.

Key Takeaways:

• Fasting for 8 hours before a cholesterol test is optimal; fasting longer than 12-14 hours can skew results as the body makes metabolic adjustments.

• Total cholesterol measures all cholesterol in the blood and should ideally be around 5-5.5 millimoles per litre.

• Triglycerides are free fats in the bloodstream and should be below 2 millimoles per litre; elevated levels may indicate recent eating, diabetes risk, or excess weight.

• HDL cholesterol is "good cholesterol" that removes cholesterol from tissues and returns it to the liver; levels should ideally exceed 1 millimole per litre.

• LDL cholesterol is "bad cholesterol" because extensive research shows that lowering it in high-risk patients leads to better health outcomes.

• The cholesterol ratio (HDL to total cholesterol) should be less than 4, as lower ratios indicate a more favorable lipid profile.

• Primary prevention guidelines recommend LDL cholesterol targets below 2 millimoles per litre, while secondary prevention (after a cardiac event) targets below 1.8 millimoles per litre.

• Emerging research suggests even lower LDL targets below 1 millimole per litre may benefit high-risk patients with no adverse effects.

• Dr. Bishop prefers fasting cholesterol tests because they allow simultaneous measurement of glucose and insulin levels to calculate insulin resistance using the HOMA calculation.

• Cholesterol numbers alone don't tell the complete story; blood pressure, blood glucose, insulin levels, and lifestyle factors are equally important for cardiovascular health assessment.