You suspect wrong. Plants don't have 15 basic nutrients. Including Vitamin D, B, B12, A, K. All from animals. Carnosite, Carnitite, etc. If you eat grass feed animals, fish, local diary products, quit carbs, sugar and processed food you will be ok. I am ex vegan. And, yes, I know the answer already: "you did it wrong", but no, I didn't.