I have been eating this way for a few months and keto before, and if you don't tend to eat a great variety of foods you will be lacking in vitamins. I have histamines and food sensitivities, so many of the foods, like liver and eggs which provide great variety of those vitamins I have to take suppliments. which I do not do blindly, my bloodwork shows me what I am lacking.

If you eat organ meats, eggs and limited dairy products you do cover your bases. chewing on your bones and or bone broth provide even more. so much can be covered if you tend to eat nose to tail.

my vitamin E is sky high and low on my vitamin D, just a couple highlights and this was when I was keto switching to carnivore several months ago. so eating a bit of spinach will not take care of it all. I love spinach and broccoli and did eat that.