While dairy is arguably the most popular source of calcium, it’s not an ideal one because most dairy contains lactose and inflammatory casein protein. Instead of regular cows’ milk, we offer our children bone-in fish (e.g., sardines), organ meats (in the form of capsules), and aged cheeses made from 100% grass-fed cows that produce A2 milk.  A2 is a non-inflammatory type of casein protein that’s produced by Jersey cows, goats, camels and sheep.