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« on: June 01, 2014, 10:27:23 am »
This has to be one of the most biased, unscientific post I’ve read in a while.
“By and large, carnivorous mammals across the world exhibit lower average lifespans than omnivorous creatures.” Really? Please show any evidence of this. And even if this was true, it means nothing about the validity of a diet to optimal health. Optimal health means heath level during life, not how long that life lasts.
Mice are herbivores, but they live less long than a cat that feeds on them, if they both die of old age.
The evolutionary ideas, while “somewhat” valid as empirical evidence (is there any evidence that animals in the wild tend to eat what is best for them? I think not, but that’s a whole other can of worms I’m not opening right now). However, no one knows what earlier humans ate. It’s all guesses and suppositions. They had element “X” in their environment, it’s edible, they probably ate it. Again, why would people assume that they would eat what is good for them rather then what they might stumble upon is beyond me.
Worse, using arguments of authority is dishonest. “reading up on a great deal of scientific studies and informal experiences” What’s that supposed to mean? Every doctor I’ve ever heard talk about nutrition has claimed that fat leads to heart disease, that grains should compose the main source of caloric intake, that taking a baby aspirin is a good idea. And they are very smart people that have studied a lot, read a lot of scientific articles and have been trained by very great peers.
The body does not tend towards an optimal state. It maintains a “minimal” state. Enough to not die, nothing more. Lie down in a bed for a few months, eating the best diet you can. Your bones will still end up brittle, your muscles will be almost inexistent. Even if you eat a lot of protein and fat. Why? Because your body does the least in can if it has the option.
So the fact that gluconeogenesis and ketosis are very inefficient (on a calorific) and taxing (on the organs) is irrelevant. That’s like saying that a jet is not optimal because it consumes too much energy and stresses its components, so a bicycle is better.
If you are going to take your own arguments as a basis for optimal behavior, then you should be against exercise. After all, exercise is inefficient, it taxes many organs, including the heart, wastes energy, and produces many “dangerous” chemical reactions.
“The very fact that gluconeogenesis is associated to cortisol levels should send up some red flags” So again, are you against exercise? Exercise is strongly associated to cortisol levels. Cortisol is associated with stress. Stress is good for the body. Absence of stress is bad. Why don’t you tell astronauts how the absence of stress on their joints is good for them?
Finally, telling people that they should seriously switch their diets if they start feeling sick is irresponsible. People get sick irrespective of their diets. You trying to be an authority on what people should or should not do is laughable.
I know I said finally, but I lied. Here is some pure wisdom: The true optimal form is to be dead. Then you consume nothing, you experience no stress, and you have no chance of having any disease. But that is not what I want. I want to be as strong and vigorous as I can. I don’t seek to be free from pain and stress, I want for everything that doesn’t kill me to make me stronger. I don’t want an easy life, I want the strength to endure a hard one.