In the last chapter I endeavored to explain the three primary causes of disease, namely: (1) Lowered Vitality, (2) Abnormal Composition of Blood and Lymph, (3) Accumulation of Waste, Morbid Matter, and Poisons in the System.

We shall now consider some of the secondary manifestations resulting from these primary causes. Consulting the table on page 18 (Chapter 2, internet version), we find mentioned as the first one of the secondary causes or manifestations of disease, "Hereditary and Constitutional Taints."

On first impression, it might be thought that heredity is a primary cause of disease; but on further consideration it becomes apparent that it is an effect and not a primary cause. If the parents possess good vitality and pure, normal blood and tissues, and if they apply in the prenatal and postnatal treatment of the child the necessary insight and foresight, there cannot be disease heredity. In order to create abnormal hereditary tendencies, the parents, or earlier ancestors, must have ignorantly or wantonly violated Nature's Laws, such violation resulting in lowered vitality and in deterioration of blood and tissues.

The female and male germinal cells unite and form the primitive reproductive cell--the prototype of marriage. The human body with its millions of cells and cell colonies is developed by the multiplication, with gradual differentiation, of the reproductive cell. Its abnormalities of structure, of cell materials and of functional tendencies are reproduced just as surely as its normal constituents. Herein lies the simple explanation of heredity which is proved to be an actual fact, not only by common experience and scientific observation but also in a more definite way by Nature's records in the iris of the eye.

The iris of the newborn child reveals in its diagnostic details not only, in a general way, hereditary taints, lowered resistance, and deterioration of vital fluids, but frequently special weakness and deterioration in those organs which were weak or diseased in the parents. Under the conventional (unnatural) management of the infant, these hereditary tendencies to weakness and disease and their corresponding signs in the iris become more and more pronounced, proceeding through the various stages of incumbrance from acute, infantile diseases through chronic catarrhal conditions to the final destructive stages.

In the face of the well-established facts of disease heredity we have, however, this consolation: If the child be treated in accordance with the teachings of Nature Cure philosophy, the abnormal hereditary encumbrances and tendencies can be overcome and eliminated within a few years. If we place the infant organism under the right conditions of living and of treatment, in harmony with the laws of its being, the Life Principle within will approach ever nearer to the establishment of the perfect type. Hundreds of "Nature Cure" babies all over this country are living proofs of this gladsome message to all those who have assumed or intend to assume the responsibilities of parenthood.