Of course, sticking with a diet loaded with saturated fat, salt and red meat will likely lead to heart disease, but hey, at least you'll be a skinny corpse.
What are you basing this assertion on?
I really want to know.
There has been no definitive link between saturated fat, salt, and red meat and heart disease. None. If you have information, please point it out.
And don't give me the "everyone knows that", or "that is what the American Heart Association says". Tell me what scientific research you have read. I know what I have read, and none of it says that. All of these conclusions were made, and dietary direction has been given, DESPITE the scientific research on these topics. Here's a good intro for you: Dr Peter Attia on the limits of scientific research.
I can tell you, that link isn't there. And you forgot the other nugget of "conventional wisdom" that isn't supported by science either - that high cholesterol is a direct cause of heart disease. Because half - yes HALF - of people who have heart attacks have what is considered to be normal cholesterol. Yes, there is old standby that there is "good cholesterol and bad cholesterol" but it's much more complex than just that. And over 90% of the cholesterol in your blood does not come from what you eat - your body produces it. Now, what you eat can impact your blood cholesterol composition, but it does not come from eating saturated fat.
You talk about what we've learned in the last 100 years. Do you have any concept of how long humans have been around? 100 years is a blink of the eye. How do you think we got here? How did we not only survive, but thrive? By whatever you consider to be "healthy eating"? Let me guess.... low fat, high carb diet, lots of fiber, and filler like beans, fruits and vegetables. The reason obesity is so rampant, and people are looking to fads, is because of the misinformation we have all been given, and have been propagating, for years.
Science tells us the real story.
Good Calories Bad Calories
The Primal Blueprint
And yes, I have bet my life in all of this. 4+ years of eating a high-saturated fat, low carb diet, minimal sugar, minimal inflammation foods. By choice. I am in my upper 40s and I have never felt better. It sounds daunting, but once you learn how your body works and why to eat certain things and not others it is not. It doesn't take will power either. Once you break that physical addiction to those things that put your body through the chemical roller-coaster, it is easy. And simple. And you'll wonder why nobody told you these things sooner.