Lies I Taught in Medical School

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By Claire McDonnell Liu, Nutritionist atĀ

Lies I Taught in Medical School” by Dr Robert Lufkin is a fascinating book that prises open the world of medical school. It uncovers eye-opening insights into how conventional medicine makes us sicker and what we can do to save our health.

Dr. Lufkin, an experienced doctor and medical lecturer, shares his journey and some surprising truths about the medical field. He shreds common nutrition and health myths he had believed and taught for many years.

Shifting Perspective

Dr. Lufkin describes how despite following the medical and nutritional advice he taught he struggled with health issues. He followed a vegan diet for a long time, believing it the healthiest choice. However, despite his efforts, he still faced health problems, becoming overweight and developing high blood pressure, pre-diabetes, chronic inflammation, and gout (a type of arthritis).

Watching his father suffer from health conditions had deeply affected Dr. Lufkin. His father eventually passed away due to complications from heart disease. This personal experience made Dr. Lufkin determined to understand health and nutritional science better. Through his research, Robert learned that many healthy practices he had adopted, and still taught to medical students, could be detrimental to health.

On researching different dietary approaches Dr Lufkin found compelling evidence for a low-carbohydrate, high-fat diet, often called the ketogenic diet. He switched to eating meat, fish, eggs, and different healthy fats, whilst reducing his intake of sugars and grains. By switching to a low-carb nutrition approach Dr. Lufkin significantly improved his health, putting his list of metabolic and inflammatory health conditions into remission. This change helped him lose weight, lower his blood pressure, and improve his overall health, whilst teaching the pitfalls of following mainstream nutrition recommendations.

Nutritional Myths

The book delves into several nutrition myths that Dr Lufkin once believed and taught to his medical school students. He outlines the latest scientific insights that challenge these myths, some highlights are below:

Low-Fat Diets

Old Belief: Fats are bad and should be avoided to maintain good health and prevent heart disease. New Science: While he once advocated for low-fat diets, he now recognizes that healthy fats are essential for good health. 


Old Belief: All cholesterol is harmful and should be kept as low as possible to avoid heart disease. New Science: Dr. Lufkin clarifies that cholesterol is not inherently bad. There are different types of cholesterol, LDL (low-density lipoprotein) and HDL (high-density lipoprotein), and a deeper understanding of these types of cholesterol is crucial for cardiovascular health.

Heart Disease

Old Belief: Heart disease is primarily caused by clogged arteries due to eating dietary fats.
New Science: Dr. Lufkin reveals that inflammation is a major factor in heart disease, which can damage blood vessels and lead to plaque buildup. Dr Lufkin shares approaches to better understand and manage inflammation, through diet, exercise, and avoiding processed oils, sugars, and food.

Carbohydrates and Sugars

Old Belief: A high-carbohydrate, low-fat diet is the best approach to maintaining health and avoid weight gain.
New Science: Dr. Lufkin’s research shows that reducing carbohydrates and sugars can benefit overall health. Whilst high-carb diets, especially those rich in refined sugars and grains, can lead to insulin resistance, weight gain, and an increased risk of type 2 diabetes. 

Saturated Fats

Old Belief: Saturated fats are dangerous and should be avoided to prevent heart disease.
New Science: Dr. Lufkin learned that saturated fats, from dairy, coconut and animal products, are not harmful as once believed. 

Plant-Based Diets

Old Belief: Plant-based diets are the healthiest choice.
New Science: Dr. Lufkin discovered that moving from plant-based to low-carb eating improved his health significantly. His diet now includes meat, fish, eggs, and healthy fats, avoiding sugar and grain products.

Medicine Beyond Medication

A touching story in the book is about a patient named Mrs. Johnson. Mrs. Johnson was an elderly woman who came to see Dr. Lufkin with severe chest pain. Dr. Lufkin initially thought it was a heart attack and started the usual treatment course of medications. However, after more tests and spending time talking with her, he discovered that her pain was due to a severe anxiety attack, not a heart problem. His experience with this patient taught Dr. Lufkin the importance of looking beyond the obvious, listening to his patients and not rushing in with medications first. Mrs. Johnson’s story showed Robert the importance of emotional health, as well as physical health.


Dr. Lufkin’s journey in “Lies I Taught in Medical School” illustrates the importance of questioning established beliefs and staying open to new scientific findings. By challenging nutrition myths, he discovered more effective ways to improve his health and the health of his patients. This book serves as a reminder that science is always evolving, and what was once considered fact may change with new research and understanding.

“Lies I Taught in Medical School” is a book for those curious about medicine and learning a new approach to health. Full of interesting patient stories, invaluable lessons, honesty and humour, teaching us that the truths we trust may need careful reevaluation.

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