Sirloin Stu wrote:
We are carnivores by biology, and plants are a very poor substitute in order to get through famine. If you choose to live the rest of your life telling your body that it is experiencing a famine, then dive right in my friend.
Carnivores can synthesize Vitamin C, but we lost that genetic adaptation a long time ago because we were eating so many Vitamin C rich foods.
Humans do not do well in the long term on a Carnivore diet. The easiest example of an entire people doing this are the Inuit (Eskimos). However, they are known to eat the partially digested plant matter from the stomachs of mammals to get some fiber in their diet. They also have short lifespans, and mummified Inuit (pre-western civilization processed food) show atherosclerosis.
There's a reason why slaughterhouse workers are at high risk of getting PTSD. Killing animals all day is hard on humans because we empathize with other animals. If you took a bear (an omnivore - not even a carnivore) and put it in a slaughterhouse, it would see a buffet and have a great time. Take anyone who eats meat and put them in a slaughterhouse, and they are at a high risk of psychological problems, and will probably be turned off of eating many kinds of meat. Does that sound like a carnivore, or even an omnivore?
If you look at the common traits of carnivores vs omnivores, vs herbivores, humans are towards the herbivore end of the omnivore spectrum - intestinal length to torso ratio, our teeth, claws (lack thereof), ability to survive on the various nutrients available, etc.
Ultimately the classification like any classification is human opinion, so it is imperfect. My only question is - what diet is optimal for human health, in terms of length of life, length of healthy life, and athletic performance?
It may be that for certain athletic feats, an omnivorous diet is optimal. But if you structure your diet for optimal athletics, that means you put health on the back burner - the two don't necessarily go hand in hand. So it is a tertiary question for me. After all, look at the consequences of doping... short term athletic gains, and usually negative health consequences.