Are there enough nutrients in meat to allow you to live on meat alone? People who follow a strict plant-based diet do need to supplement with vital vitamins, so is it the same if you avoid the veggies?
As humans, we need 4 fat-soluble vitamins, these are A, D, E, and K. we need to have fat on our plate to absorb these vitamins. We also need Vitamin C and all the B vitamins. B12 was talked about in this blog here.