My cardiologist doesn;t care how much red meat I eat. Just don;t eat carbs he says. On the other hand I had triple bypass and have diabetes 2. The whole things is mixed up. Who knows what to believe any more.
Unfortunately, most cardiologists are hopelessly incompetent. I've seen some.
The surgeons are usually top class, but majority of cardiologists are clueless about the nutritional aspects and exercise benefits. They just keep prescribing the same betablockers, statins, and baby aspirins.
https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013Below is a short list of world famous cardiologists who started as conventional doctors but seeing the results of conventional treatments (promoted by old school and drug making companies) they switched to the preventive heart treatments with great results and many saved patient lives. Google any of them, they have videos, articles, books, talk shows, and they don't sell any supplements or magic pills, they just prescribe healthy food and exercise.
Caldwell Esselstyn, Colin Campbell, John McDougal, Dean Ornish, Barnard, Neil Barnard, Joel Fuhrman, Kim Williams. These were the pioneers recommending plant-based food, now there are many others following in their footsteps.
Definitely, listen to this: (24 minutes)
https://www.youtube.com/watch?v=VNW_5EqqWoo (53% increased mortality by going on ketogenic diet)
If you have 2 hours, here is an interesting and insightful discussion with cardiologist Joel Kahn on Diet Wars:
https://www.youtube.com/watch?v=yrCaG2gT2VgAs to the diabetes, the latest research indicates that it is not caused so much by sugar, as by the excess calories. Mentioned also in the video above, 44:30'