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Summary
On episode 329 of 40+ Fitness, Coach Allan sits down with Dr. Joel Kahn, a world leading cardiologist, best selling author, and clinical professor of medicine at Wayne State University School of Medicine, who serves as founder of the Kahn Center for Cardiac Longevity. They discuss his book, The Plant Based Solution.
Dr. Kahn argues that a whole food, plant based diet is one of the most powerful tools available for preventing, stopping, and even reversing heart disease, and he lays out why the way most meat is produced today, in Confined Animal Feeding Operations, makes the case for change even stronger.
The conversation also covers the DASH and Mediterranean diets, why olive oil is not the health food many people assume it is, and the specific supplements a vegan needs to stay on top of.
Links
- https://drjoelkahn.com
- https://www.wellnessfx.com
- https://www.lifeextension.com
Key Takeaways
- Most meat sold in the US comes from CAFOs, not idyllic farms. Dr. Kahn explains that more than 95 percent of the meat Americans eat, whether beef, pork, chicken, or turkey, comes from Confined Animal Feeding Operations, where animals are raised without fresh air or fresh food and require constant antibiotics just to survive. He argues the system creates both a nutritional and an environmental disaster, and that only shoppers with the money to buy from Whole Foods or similar sources can reliably avoid it.
- A whole food, plant based diet can reduce or eliminate the need for common medications. Dr. Kahn says people who adopt a plant based diet often find they no longer need blood pressure medication, diabetes medication, cholesterol drugs, or even Viagra. He has been plant based himself for 40 years, takes no prescription drugs, and considers that outcome typical rather than exceptional.
- The DASH diet is strong science, but it started out closer to a vegetarian diet. Dr. Kahn notes the government funded DASH studies were originally planned around a vegetarian eating pattern before the planning committee worried the public would not accept it and shifted it toward a Mediterranean style diet instead. It still lowered blood pressure significantly and now ranks among the top overall diets recommended in the US.
- Olive oil is not the health food most people assume. While olive oil beats butter, lard, and ghee for heart health, Dr. Kahn says it still contains a meaningful amount of saturated fat and offers less benefit than plain vegetable oils in large studies. For patients actively trying to prevent, stop, or reverse serious heart disease, he leaves oil out of the diet entirely, following the oil free protocols used by physicians such as Dr. Dean Ornish and Dr. Joel Fuhrman, which are recognized by Medicare as an authorized treatment for heart disease.
- Substituting vegetable oils for animal fats meaningfully lowers heart attack risk. Citing a large study of more than 100,000 people, Dr. Kahn says switching from butter, lard, and ghee to vegetable oils lowered heart attack risk by roughly 25 percent, while switching to olive oil specifically produced about a 10 percent benefit. He also warns that olive oil fraud is common, so buyers should look for genuine extra virgin oil from known producing regions like Spain, Italy, and Greece.
- A fully vegan diet needs three specific supplements: B12, vitamin D, and omega-3. Dr. Kahn recommends a B12 supplement three to four times a week, about 2,000 IU of vitamin D3 daily, and an algae based omega-3 supplement, since plants do not directly supply these nutrients. He tests these levels regularly in his cardiology practice and says his meat eating patients are often more deficient than his plant based patients.
- Give a new eating style three weeks before judging it. Dr. Kahn’s 21 day menu is built on the idea that it takes about that long for dairy and processed food cravings to fade and for the palate to adjust to whole foods. He fills the plan with simple, repeatable meals such as overnight oats, chickpea mash sandwiches, soups, chilis, and bean burgers rather than complicated restaurant style recipes.
- Ethical motivation sustains dietary change better than health motivation alone. Dr. Kahn observes that people who adopt a plant based diet for ethical reasons tied to how animals are treated tend to stick with it more consistently than those doing it purely for personal health outcomes, because the emotional commitment runs deeper.
“I take no prescription drugs and feel good every day. That’s a pretty good place to be as you’re approaching 60.”
Dr. Joel Kahn
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Episode 343 – The truth about cholesterol levels with Dr. Jonny Bowden