This has already been explained in a previous chapter, but to reiterate: osteoporosis is merely the natural reaction of the body trying to protect itself from the internal acidity caused by the intake of excessive protein, whereby calcium from the bones is sacrificed to neutralize the acid which, if not so neutralized, would cause even greater harm. Osteoporosis is therefore the lesser of two evils and completely avoidable by avoiding the excessive protein intake which is a feature of the modern diet equally contributory to toxemia as the excesses of fat and cholesterol.