7. Salmon / Trout
Fish that are rich in omega 3 fats is also a viable source of vitamin B12 and D; vitamins that help optimize brain function and fight inflammation. Just like beef, it is good to prepare fish on a grill or in the oven with a little olive oil.
Add some vegetables or a spinach salad and you will be eating the perfect, healthy meal. Fish should be eaten at least a couple of times a week, but you want to make sure that you are maximizing your intake of B12 when you choose the type of fish that you are going to have.