"Calcium is better derived from plant foods. The bioavailability of milk calcium is relatively low compared to several types of vegetables rich in calcium (eg, broccoli), which means that whereas milk is rich in calcium, it cannot be absorbed and used by our bodies very well. Animal-protein sources, including dairy products, meat and eggs, can also cause a significant loss of calcium through the kidneys because of a high amount of sulfurous amino acids. The facts are clear: the protein content that milk is praised for makes the absorption of the calcium in milk more difficult and even causes a net loss of calcium! In fact, the osteoporosis rates are the highest in countries where people drink the largest amounts of milk and lowest where people drink the least amounts of milk."
Dr. med. Ernst Walter Henrich, Pro Vegan (via veganfirebender)