@Syla5 thank you mate, but politely I must disagree with you entirely.
Let's take a look at some facts, first of all for the past 20 odd years geneticists have known that our lifespan should be approximately 120 years. That is, excluding things like injury or disease that's what we should all be living to. But the vast majority of us don't even get anywhere close to 100, with huge swathes of people going in there 60's and 70's for example. Also most of old people become incredibly frail etc in those latter stages of life. The question is why? Why are we not reaching our genetic potential and why are we all so sick? Could it be diet related?
I believe it is. There's absolutely zero doubt that over the millions of years of our evolution our species developed to become carnivore. We don't regrow our teeth like herbivores, and we're not capable of of using them to "mill" with our teeth like they do. Lock your teeth together and try moving your jaw side to side. You can't.
Then there's the fact that unlike every other animal that is supposed to eat plant matter, we don't have a secum. This renders over 90% of all plant matter indigestible/inedible to us. We did have a security but the appendix, a vestigial organ that serves no purpose in the body has all but evolved away and serves no function. Why would this happen over millions of years if our ancestors ate plants? It wouldn't.
Then consider that humans have stomach acid stronger than carrion animals like vultures, the fact that there are 4 organs in the body dedicated to the process of digesting, converting and processing of fats. Specifically for long chain fatty compounds which are only found in animals.
If then we we're supposed to be omnivore how did we survive the ice age as a species, when there where no plants? Why are there no cave paintings of fruits and vegetables? How is it that Innuits who still follow their Ancestral diets don't get malnourished and die? The masai don't typically eat plants, Ghengis Khan's entire army ate and drank horse meat and blood almost exclusively. Plains Indians and many other cultures do the same. Even Herodotos the ancient Greek historian has records of peoples claiming their civilisations ate nothing but meat and also lived longer. Dr Salisbury, creator of the Salisbury steak in the late 1800's did so after discovering that the people he was studying ate only meat and where healthier for longer. Not suffering any of the health conditions we typically suffered with in the west.
I could go on and on.
Then one of the first thing botanists learn is the toxicity of plants, all plants including fruit and vegetables. Nobody is arguing that they don't contain valuable nutrients but they also contain many other compounds that are toxic, carcinogenic or outright poisonous. Take tomatos, they belong in the deadly night shade group. Table mushrooms contain hundreds of known carcinogens. Yes we may have developed tolerances to such things but it doesn't mean it's good for us or that these things don't build up over time and kill us prematurely. Plants are trying to kill you, it's how they defend themselves.
Just because we can eat some of these things doesn't mean we should. We've just become used to doing so. I could go into the science of how carbs keep our insulin resistance up making us sick over time, or that they cause swelling and inflammation etc but I'd be here all week.
The point is, if we eat how we've evolved to eat we should all see greatly improved health as a minimum. I've never heard one carnivore ever say anything negative if they've been doing it properly and we're talking those who've been strict carnivore for 10years or more. There's simply no such thing as an essential carbohydrate. Ketones and fat are our bodies preferred fuel and energy sources and when eating a varied carnivore diet we get everything we need without need for supplementation.
My feeling great or having more energy may partly be coming from my fat stores, but then look at most carnivores who aren't as unwell as me with very little body fat and they feel even better than I do. I can even think of professional athletes who don't eat carbs.
kidding, mostly. 
(I think all of them will come down to a calorie deficit though)