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Originally Posted by Birdman10687
I think vegetarian or vegan diet is clearly not the most healthy diet
But it’s not the most healthy by any stretch
Based on the best evidence we have, a whole food plant based diet is the most healthy diet. Do we have proof? No. Proof is for mathematics. I talked about some of that science
in this thread.
Here's what I find extremely compelling. First as I've talked about a million times now, according to
the science of the National Academy of Sciences "any intake level above 0% of energy [of]...trans fat, saturated fat, and cholesterol...increased LDL cholesterol concentration." LDL is the #1 risk factor for the #1 reason we and our loved ones are going to die prematurely, heart disease. I.E. ANY intake of trans fat, saturated fat, and cholesterol above 0% energy "increased chronic disease risk."
That finding implies we should eat 0% animal products and processed junk which implies we should be eating something akin to a WFPB diet. That result is staggering and certainly not what those non-vegan scientists wanted to see. But what's even more compelling than this piece of evidence is when you have evidence from disparate sources converging on the same conclusion. For example, you have that Harvard study published in JAMA showing us that if you switch out 3% plant protein for animal protein--doesn't matter what animal--your disease rates go up. What's amazing about that is THIS IS EXACTLY what one would predict after viewing the science of the NAS. In real life you will never get "proof" but the closest thing you'll ever get is a situation like this, when multiple disparate forms of evidence point to the same conclusion. For rational evidenced based people, that is the gold standard. We have the same kind of multiple disparate forms of evidence pointing to the same conclusion for evolutionary theory, and climate change. That's what you wanna see. That's the most compelling form of evidence you'll ever get on this planet. And we don't just have the NAS and the Harvard study, we have the science on the
microbiome pointing to the same conclusion:
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The symbionts—the good bacteria that live in symbiosis with us—are largely nourished by fruits, vegetables, grains, and beans. Pathobionts, the disease-causing bacteria that may disrupt our microbial balance, instead appear to be fed by meat, dairy, eggs, junk food, and fast food.
As one
gut health expert put it after reviewing the latest science: "I just don't think there's any role for animal products at all when it comes to the gut microbiome."
Think about that for a second. The idea that eating animal products would promote disease causing microbes in our microbiome and eating plants would promote disease fighting microbes is EXACTLY what one would predict after viewing the science of the NAS. If it's true that any intake of animal products above 0% energy increases chronic disease risk then it pretty much HAS to be the case that eating animal products promotes the growth of disease causing microbes given how inextricably linked our gut microbial health is to our overall health. That's an AMAZING convergence of multiple forms of evidence from very credible sources pointing to the same conclusion. It doesn't get better than that.
Furthermore, this convergence of data officially ends the vegan vs meat evolution argument. Like the vegans have
their evolutionary just so story and so do the meat eaters, but that line of argument is unnecessary. We can now say
definitively we are not evolved to eat meat. The VERY FACT that eating meat above 0% energy increases chronic disease rates is prima facie evidence we did not evolve to eat meat. The VERY FACT that replacing 3% of plant protein with animal protein increases disease rates prompting the 2015-2016 president of the College of Cardiology to say "There are no safe animal products" is prima facie evidence we did not evolve to eat meat. And the VERY FACT that eating meat promotes the growth of disease causing microbes in our microbiome while plants do the opposite is prima facie evidence we did not evolve to eat meat.
Even tho the best science we have tells us we are clearly not evolved to eat meat that doesn't mean eating meat was not evolutionarily important. For most of human history thriving was not what mattered. Surviving to reproductive age to pass on our genes was the key. Who's more likely to survive to that critical point in an environment where future calories are unpredictable? A vegan or someone who eats meat. Obviously the latter. Access and acquisition to ANY calorically dense junk, meat, human brains, honey, etc would be extremely valuable in such a feast and famine environment. Sure that stuff causes disease later in life, but evolution doesn't give a **** about that. Evolution doesn't care whether you thrive and live long enough to see your great grand kids graduate college. Evolution only cares about survival to reproductive age.
We can even use this kind of logic to solve this riddle: Why are meat eaters so fat? Why is it that
vegans are "the only dietary group in North America that’s actually not overweight"? IOW why do we suck at metabolizing animal products? Why do we live in an omnivore society and 90% are overfat. The answer is simple. Think back in deep time. Who is more likely to survive to reproductive age in a feast or famine environment, someone who metabolizes meat very efficiently and stays skinny or someone who metabolizes meat poorly and thus efficiently packs on excess fat/weight? Obviously the fatter person is more likely to make it through the next famine. So the fact that most people do not metabolize animal products well is not some evolutionary paradox or mistake. It's not a bug, it's a feature, quite likely the very reason their DNA made it this far.