Meat is also supplemented with B12, same as many vegetarian meals. And with a balanced diet (greens + legumes + seeds) you won't have any problems with nutrient

Meat is also supplemented with B12, same as many vegetarian meals. And with a balanced diet (greens + legumes + seeds) you won't have any problems with nutrients. The problems arise when people is monochoice ( only meat, only lettuce, etc)