With a sufficient source of calcium, nerves are less irritable. Without a sufficient amount, pains may exist which completely disappear after a sufficient amount of calcium is taken. Some of the pains of advanced cancer may be completely relieved by giving calcium. Calcium is excreted from the body in the discharges which comes from wounds and open sores, and ulcers. Cancer usually exists as an ulcerated area.
Much calcium is lost in the fluid that seeps from the ulcerated cancer surface.
As calcium deficiency is one of our most widespread deficiencies, it shows up also in the lack of resistance in our teeth. The mention of tooth destruction in pregnancy calls to mind the direct robbing of calcium-bearing areas to furnish calcium to the child. But old infections may also rob teeth and bones, as calcium may be needed to erect barriers against invading microorganisms. This takes place in the lungs in tuberculosis. A tuburcular body being examined at postmortem will show many areas in the lungs which resemble small marbles.