Humans did not evolve eating vegetables or fruit. Prior to the rise of agriculture a mere 8 - 12 thousand years ago there was very little vegetation in the human diet. Prior to 80 thousand years ago there was virtually none. Humans and their progenitors for at least four million years have existed as hypercarnivores. And that means your genes have been adapted for the vast majority of history to survival on a meat-based diet. Every vitamin, mineral, and nutrient your body needs is found in meat. But the reason I choose not to eat plants is because I'm much much healthier since I tried this way of eating. I have no more acne, no more tiredness during the daytime (despite my continuing insomnia), sharper mental clarity, I no longer get DOMS after working out and can push myself much farther than I could previously, my persistent autoimmune disease (lichen planus) has completely vanished, and most of my gray hairs went away. For the first time in my life I can wake up in the morning and function immediately with no memory or energy problems. (I didn't know that people could wake up and be fully alert immediately upon waking.) And I lost 30 pounds. But probably the best part is that I can eat as much as I want until I'm stuffed and not worry about gaining weight. After nearly 20 years of counting calories I'm so relieved to not worry about it anymore and never need to feel hunger.

Cholesterol isn't a nutrient of concern. Very little of the cholesterol you eat is actually absorbed: the molecules are too big. Almost all of the cholesterol in your body is endogenously produced.

Carnivore diets seem to work quite well for some people and are a disaster for others. We don't really know why. Maybe something to do with genetics or gut microbiome. It's worth a try for people who have struggled with losing fat other ways.