Meat: Beef, lamb, pork, chicken
Fish: Salmon, trout, haddock and many others
Eggs
Vegetables: Spinach, broccoli, cauliflower, carrots and many others
Fruits
Nuts and Seeds
High-Fat Dairy: Cheese, butter, heavy cream, yogurt
Fats and Oils: Coconut oil, butter, lard, olive oil and cod fish liver oil