John Harvey Kellogg

(February 26, 1852 – December 14, 1943) was an American medical doctor in , who ran a sanitarium using holistic methods, with a particular focus on , s, and exercise. Kellogg was an advocate of vegetarianism for health and is best known for the invention of the known as with his brother, . He led in the establishment of the .

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aprile 10, 2026

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"JUST in proportion as the perpetuation of the race is more important than the existence of any single individual, the organs of reproduction may in a certain sense be said to rank higher than any other organs of the human frame, since to them is intrusted the important duty of performing that most marvelous of all vital processes, the production of human beings. That this high rank in the vital economy is recognized by nature, is shown by the fact that he has attached to the abuse of the generative function the most terrible penalties which can be inflicted upon a living being. The power of abuse seems to be almost exclusively confined to man; hence, we find him the only one of all living creatures subject of the awful penalties of sexual transgression. The “use” of the reproductive function is perhaps the highest physical act of which man is capable; its “abuse” is certainly one of the most grievous outrages against nature which t is possible for him to perpetrate No observing person an doubt that sexual relations of men and women determine in a great degree their happiness or misty in life. This subject, then, deserves due attention and careful consideration. It is of no use to scout it; for it will inevitably obtrude itself upon us, no matter how sedulously we attempt to avoid it. It can be rightly considered only with the most perfect candor, with the mind unbiased by passion, and prayerfully anxious to know and “do” what is right."

- John Harvey Kellogg

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"Sexual Precocity.-There are two periods in human life when the sexual instincts should be totally dormant; and they are so when nature is not perverted. The first is the period reaching from infancy to puberty. The second is the period reached in advanced age. If raised strictly in accordance with natural law, children would have no sexual notions or feelings before the occurrence of puberty. No prurient speculation about sexual matters would enter their heads. Until that period, the reproductive system should lie dormant in its undeveloped state. No other feeling should be exhibited between the sexes than that brotherly and sisterly affection which is so admirable and becoming. Fortunate, indeed, would it be for humanity if this natural state always existed; but it is a lamentable fact that it is rarely seen in modern homes. Not infrequently, evidences of sexual passion are manifested before the child has hardly learned to walk. It has been suggested that this precocity is nothing remarkable or unnatural, since it is often seen in little lambs and other young animals. To this it is only necessary to reply that the development of the sexual instincts perfectly correspond with the longevity of the animal; if short-lived, like the sheep, only a short period intervenes between birth and the attainment of the sexual appetite and virility. If the animal is intended for long life, as is the case with man, these manifestation s are delayed until a much later period, or should be. Certain insects perform the sexual act as soon as they acquire their perfect form; but they perish as soon as the act is completed."

- John Harvey Kellogg

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"Often the manifestation of sexual precocity is less gross, but almost equally fraught with danger, nevertheless. Dr. Acton, a distinguished English surgeon whom we shall frequently quote, makes the following excellent remarks upon this subject:- “Slight signs are sufficient to indicate when a boy has this unfortunate tendency. He shows marked preferences. You will see him single out one girl, and evidently derive and unusual pleasure (for a boy) in her society. His “penchant” does not take the ordinary form of a boy’s good nature, but little attentions that are generally reserved for a later period prove that his feeling is different, and sadly premature. He may be apparently healthy, and fond of playing with other boys; still there are slight, but ominous, indications of propensities fraught with danger to himself. His play with the girl is different from his play with his brothers. His kindness to her is a little too ardent. He follows her, he does not know why. He fondles her with a tenderness painfully suggestive of a vague dawning of passion. No one can find fault with him. He does nothing wrong. Parents and friends are delighted at his gentleness and politeness, and not a little amused at the early flirtation. If they were wise, they would rather feel profound anxiety; and he would be an unfaithful or unwise medical friend who did not if an opportunity occurred, warn them that such a boy, unsuspicious and innocent as he is, ought to be carefully watched and removed from every influence calculated to foster his abnormal propensities."

- John Harvey Kellogg

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"Senile Sexuality.-As with childhood, old age is a period I which the reproductive functions are quiescent unless unnaturally stimulated. Sexual life begins with puberty, and, in the female, ends at about the age of forty-five years, the period known as the “menopause”, or “turn of life”. At this period, according to the plainest indications of nature, all functional activity should cease. If this law is disregarded, disease, premature decay, possibly local degenerations, will be sure to result. Nature cannot be abused with impunity. The generative power of the male is retained somewhat longer than that of the female, and by stimulation may be indulged at quite an advanced age, but only at the expense of shortening life, and running the risk of sudden death. Says Parise, “One of the most important pieces of information which a man in years can attain is “to learn to become old betimes,’ if he wishes to attain old age. Cicero, we are told, was asked if he still indulged in the pleasures of love. ‘Heaven forbid,’ replied he, ‘I have forsworn it as I would a savage and a furious master.’” Some learned physicians place the proper limit of man’s functional activity at fifty years, if he would not render himself guilty of shortening his days by sensuality. Other reasons for this course will appear hereafter. When the passions have been indulged, and their diminishing vigor stimulated, a horrid disease, “satyriasis”, not infrequently seizes upon the imprudent individual, and drives him to the perpetration of the most loathsome crimes and excesses. Passions cultivated and encouraged by gratification through life will thus sometimes assert a total supremacy in old age."

- John Harvey Kellogg

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"Early Marriage.-The preceding paragraph contains a sufficient reason for condemning early marriage; that is, marriage before the ages mentioned. It is probable that even the ages of twenty and twenty-four are too early for those persons whose development is uncommonly slow. But there are other cogent reasons for discountenancing early marriages, also drawn from the physiology of reproduction, to say nothing of the many reasons which might be urged on other grounds. 1. During the development of the body, all its energies are required in perfecting the various tissues and organs. There is no material to be spared for any foreign purpose. 2. The reproductive act is the most exhaustive of all vital acts. Its effect upon an undeveloped person is to retard growth, weaken the constitution, and dwarf the intellect. 3. The effects upon the female are even worse than those upon the male; for, in addition to the exhaustion of nervous energy, she is compelled to endure the burdens and pains of child-bearing when utterly unprepared for such a task, to say nothing of her unfitness for the other duties of a mother. With so many girl-mothers in the land, it is any wonder that there are so many thousands of unfortunate individuals who never seem to get beyond childhood in their development? Many a man at forty years is as childish in mind and as immature in judgment, as a well-developed lad of eighteen would be. They are like withered fruit plucked before it was ripe; they can never become like the mellow and luscious fruit allowed to mature properly. They are unalterably molded; and the saddest fact f all is that they will give to their children the same imperfections; and the children will transmit them to another generation, and so the evil will go on increasing, unless checked by extinction."

- John Harvey Kellogg

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"According to this rule, a man or woman or large combativeness should select a partner equally inclined to antagonism; then we should have what? The elements of a happy contented, harmonious life? No, instead, either a speedy lawsuit for divorce, or a continual domestic broil, the nearest approach to mundane purgatory possible. The selfish, close-fisted, miserly money-catcher must marry a woman equally sordid and stingy. Then together they could hoard up, for moths and rust to destroy, or for interested relatives to quarrel over, the pictorial greenback and the glittering dollar, each scrimping the other down to the finest point above starvation and freezing, and finally dying, to be forgotten as soon as dead by their fellow-men, and sent among the goats at the great assizes. A shiftless sprendthrift must choose for a helpmeet (?) an equally slovenly, thriftless wife. A man with a crotchet should select a partner with the same morbid fancy. A man whose whole mental composition gravitates behind his ears, must mind a mate with the same animal disposition. An individual whose mental organization is sadly unbalance, is advised to seek for a wife a woman with the same deficiencies and abnormalities. Any one can see at a glance the domestic disasters which such a plan of proceeding would entail. Men and women of unbalanced temperaments would become more unbalanced. An individual of erroneous tendencies, instead of having the constant check of the example and admonitions of a mate of opposite tendencies, would be, by constant example, hastened onward in his sinful ways. Thus, to all but a very small proportion of humanity, the married state would be one of infelicity and degeneration. And what would be the progeny of such unions? The peculiarities and propensities of the parents, instead of being modified and perhaps obliterated in the children by corresponding difference sin character, would be doubly exaggerated. The children of selfish parents would be thieves; those of spendthrifts, beggars; those of crotchety parents, monomaniacs; those born of sensual parents, beastly debauchees. A few generations of such a degenerating process would either exterminate the race of drive it back to Darwin’s ancestral ape. It must not be inferred, from our strictures upon the theory mentioned, that we would advocate the opposite course, that is, the contraction of marriage by individuals of wholly dissimilar tastes, aims, and temperaments. Such alliances would doubtless be quite as wretched in their results as those of an opposite character. It is with this as with nearly all other subjects; the true course lies between the two extremes. Parties who are negotiating a life partnership should be careful to assure themselves that there exists a sufficient degree of congeniality of temperament to make such close and continued association agreeable."

- John Harvey Kellogg

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"Disparity of Age.-Both nature and custom seem to indicate that the husband should be a little older than the wife. Several reasons might be given for this; but we need not mention them. When, however, the difference of ages reaches such an extreme as thirty, forty, even fifty or more years, nature is abused, good taste is offended, and even morality is shocked Such ill-sorted alliances are disastrous to both parties, and scarcely more to one than the other. An old man who forms a union with a young girl scarce out of her teens-or even younger-can scarcely have any very elevated motive for his action, and he certainly exposes himself to the greatest risk of sudden death, while insuring his premature decay. A king once characterized such a course as “the pleasantest form of suicide.” It is doubtless suicidal, but we suspect there are some phases of such an unnatural union which are not very enjoyable. One reason of the great danger of such marriages to the old is the exhaustive effects of the sexual act. As previously noted, in some animals it causes immediate death. Dr. Acton makes the following pertinent remarks:- “So serious, indeed, is the paroxysm of the nervous system produced by the sexual spasm, that its immediate effect is not always unattended with danger, and men with weak hearts have died in the act. Every now and then we learn that men are found dead on the night of their wedding.” “However exceptional these cases are, they are warnings, and should serve to show that an act which “may” destroy the weak should not be tampered with, even by the strong.” “There are old men who marry young wives, who pay the penalty by becoming martyrs to paralysis, softening of the brain, and driveling idiocy.”"

- John Harvey Kellogg

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"Dr. Gardner quotes the Abbe Maury, as follows: “I hold as certain that after fifty years of age a man of sense ought to renounce the pleasures of love. Each time that he allows himself this gratification is “a pellet of earth thrown upon his coffin.” Dr. Gardner further says: “Alliance of this sort have taken place in every epoch of humanity, from the time of the patriarchs to the present day,-alliances repugnant to nature,-between men bordering on decrepitude and poor young girls who are sacrificed by their parents for position, or who sell themselves for gold. There is in those monstrous alliances something which we know not how to brand sufficiently energetically, in considering the reciprocal relations of the pair thus wrongfully united, and the lot of the children which may result from them. Let us admit, for an instant, that the marriage has been concluded with the full consent of the young girl, and that no external pressure has been exerted upon her will-as is generally the rule-it will none the less happen that reflection and experience will tardily bring regrets, and the sharper as the evil will be without remedy; but if compulsion, or what is often the same thing, “persuasion”, had been employed to obtain the consent with the law demands, the result would have been more prompt and vehement. From this moment the common life becomes odious to the unhappy victim, and “culpable hopes” will arise in her desolate heart, so heavy is the chain she carries. In fact, the love of the old man becomes ridiculous and horrid to her, and we cannot sufficiently sympathize with the unfortunate person whose duty [?] it is to submit to it. If we think of it an instant, we shall perceive a repulsion such as is only inspired by the idea of incest. . . . So what do we oftenest observe? Either the woman violently breaks the cursed bands, or she resigns herself to them ; and then she seeks to fill up the void in her soul by adulterous amours. Such is the somber perspective of the sacrilegious unions which set at defiance the most respectable instincts, the most noble desires, and the most legitimate hopes. Such, too, are the terrible chastisements reserved for the thoughtless or foolish pride of these dissolute gray-bears, who prodigalize the last breath of their life in search of depraved voluptuousness.”"

- John Harvey Kellogg

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"In old age the seminal fluid becomes greatly deteriorated. Even at the best, its component elements could only represent decrepitude and infirmity, degeneration and senility. In view of such facts, say Dr. Acton,- “We are, therefore, forced to the conclusion that the children of old men have an inferior chance of life; and fact daily observed confirm our deductions. Look but at the progeny of such marriages; what is its value? As far as I have seen, it is the worst kind-spoilt childhood, feeble and precocious youth, extravagant manhood, early and premature death.” Unions of an opposite character to those just considered, wherein a young man married a woman much older than himself, are more rare than those of the other class. They are, perhaps, less deplorable in their physical effects, but still highly reprehensible they are seldom prompted by pure motives, and can e productive of no good. Children resulting from such unions are noticeably weak, unbalanced, and sorry specimens of humanity. We have scarcely referred to the domestic misery which may result from these disgraceful unions. If a young girl is brought home by a widower to preside over his grown-up daughters, perhaps old enough to be her mother, all the elements are provided for such a domestic hell as could only be equaled by circumstances precisely similar. If children are born, neither father nor mother is fit to act the part of a parent to them. The father, by reason of his age, is fitful, uncertain, and childish; to-day too lenient, to-morrow too exacting. The mother is pettish, childish, indulgent, impatient ,and as unskilled in government as unfit for motherhood. In the midst of all this misrule, the child grows up undisciplined, uncultivated, unsubdued; a misery to his parents, a disgrace to his friends, a dishonor to himself. “What shall I do with him? And what will he do with me?” was the question asked by a girl of eighteen whose parents were urging her to marry an old man; and every young woman would do well to propound it under similar circumstances."

- John Harvey Kellogg

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