DARWIN AS A NEURASTHENIC GENIUS
Charles Darwin, as the author of the "Origin of Species" and the greatest revolutionist of the nineteenth century, has naturally had a great deal of attention paid to his life and personality. Yet not until the publication of his Autobiography and his son's Reminiscences was it generally known that he suffered from chronic ill health for most of his adult life. Dr. W.A. Johnston, in an article in the American Anthropologist, 1901, has marshalled a number of available facts, to sustain his thesis that Darwin was a victim of neurasthenia. Now neurasthenia, it is now accepted, is simply a waste-basket word, corresponding to the class miscellaneous in a classification of any group of real objects. And, as has been emphasized in preceding chapters, most neurasthenia rises upon a disturbed endocrine foundation, most often, an insufficiency of the adrenals. That is, a defect in the chain of co-operation, balance and compensation among the internal secretions is the basis for the weakness of the nervous system the term neurasthenia is supposed to explain, actually only names. Darwin's case was pretty certainly that.
There can be no doubt that Darwin had an abnormal fatigability, a lack of stamina and endurance in mental as well as physical application which plagued him from the late twenties to the sixties. As a child, he was strong and healthy, fond of outdoors, and though underrated by his teachers, noted to be possessed of intense curiosity, especially concerning natural objects. At school he was a fleet runner and cultivated a habit of long walks. Then he was surely no neurasthenic. Three years which, he himself afterwards said, were worse than wasted, at Cambridge, were filled with shooting, riding and hunting. His good health lasted until the time he probably stopped growing at 21 or 22. Thereafter his troubles began.
What was Darwin, so far as his endocrine composition was concerned? In the first place his father was a variety of pituitocentric, of the post-pituitary inferior type, six feet two inches tall, exceedingly corpulent, and, in the eyes of his son, the sharpest of observers and the most sympathetic of men. He wished to make a physician out of his son in order to carry on the medical tradition of the family: Erasmus Darwin was a physician before him. His son, however, showed no inclination for so learned and confining a profession and had to be reproached by his father in these immortal words: "You care for nothing but shooting dogs, and rat-catching, and you will be a disgrace to yourself and all your family."
Cambridge came after Edinburgh, as he was rushed from medicine into the clergy. But in vain. A friendship struck up with a naturalist, Henslow, settled his career for him. Henslow heard of a trip of general exploration the ship Beagle was to take and recommended Darwin as naturalist. The captain at first would not hear of the proposal because of Darwin's nose, a typical pituitary proboscis. But his prejudices were overcome, and Darwin sailed.
It was upon this voyage that Darwin made himself the greatest naturalist of all time, and at the same time infected himself with the virus of neurasthenia. At Plymouth, while waiting for the ship to sail, he complained of palpitation and pain about the heart, probably due to a transient hyperthyroidism, brought on by excitement. During the voyage, which lasted five years, he was afflicted often by sea-sickness. A ship-mate relates that after spending an hour with the microscope he would say "Old Fellow, I must take the horizontal for it" and lie down. He would stretch out on one side of the table, then resume his labors for a while when he again had to lie down. Already fatigability had to be fed with rest. A serious illness that Darwin claimed affected every secretion of his body acted probably as the exhausting drain upon his adrenal potential.
The return to England was the date of onset for a record of continuous illness, aggravated by his marriage, apparently, for his misery increased progressively after it. So much so that he was forced to leave London altogether so as to avoid the strain of social life, even that of meeting his scientific friends or attending scientific society meetings fatiguing him to exhaustion. After such occasions there would be attacks of violent shivering, with vomiting and giddiness. It was necessary for him to impose upon himself an absolute régime of daily routine. Any interference with it upset him completely, and made it impossible for him to do any work. Early morning was the only time for physical as we; as mental exertion. Evening found him thoroughly used up, with every move an effort. Insomnia made him its prey. A curious sensitiveness to heat and cold distressed him. In 1859, when the "Origin of Species" appeared, he wrote to a friend that his health had quite failed, and that indigestion, headaches, with a looming hopeless breakdown of body and mind made his life a burden and a curse. The twenty years of research he devoted to the problems of evolution were one long torture. For sixteen more years, during which he worked upon and produced immortal classics of biology, he was the most wretched and unhappy sufferer from neurasthenia. His life was a continuous alternation of small doses of work and large doses of rest. So he was enabled to publish twenty-three volumes of original writing and fifty-one scientific papers. Living a sort of quasi-sanitarium life, with the rules and regulations of one undergoing a rest cure for thirty-six years, he thus accomplished infinitely more than the millions who have led the strenuous life. That he thus survived, as a genius, among the perils of an intellectual nature in an environment for which his adrenals sentenced him to destruction, must be put down in large measure to the ministrations and good sense of wife and children who supplied him with the endocrine energy he lacked. All these details I have given in the attempt to analyze the internal secretion constitution of this great man of genius, to establish that he really suffered from inadequate function of his adrenal glands, for the symptoms of chronic though benign adrenal insufficiency coincide in their mass effect with the story of his life. He was not a good animal, as Herbert Spencer declared was a first sine qua non of the successful life. He was a poor animal, the poorest of animals, because he possessed poor adrenals. What saved him was his congenitally superior pituitary (the nidus of genius) and the overacting thyroid, which combined to compensate to some extent for his fundamental lack. According to his son he rose early because he could not lie in bed, and he would have liked to get up earlier than he did.
What other hints have we that in spite of his fatigue disease he was a pituitocentric? The record of his physique and physiognomy, documentary and that left in portraits and photographs. He was tall and thin and his frame was naturally strong and large. Face was ruddy, and his grey eyes looked out from under deep overhanging brows and bushy eyebrows. The ears were large and prominent, the hair straight, the nose broad and well developed. All these are distinctive pituitary traits. The photograph of him taken by Maull and Fox in 1854 shows his chin to be the square firm kind that goes with the ante-pituitary type physique. (This photo is the frontispiece of the collection of essays entitled "Darwinism and Modern Science," edited by A.C. Seward and published in 1909). Charles Darwin, we may say, then, lived the life of one with a hyperfunctioning pituitary, the anterior portion dominating the posterior, a thyroid excess, and an adrenal much deficient, the combination settling the fate of a grand intellect in an invalid. It is interesting to note that an extant portrait of Erasmus Darwin, Darwin's distinguished grandfather, shows a pituitocentric, but with a rounder head and a fatter face, which point to a predominance of the post-pituitary over the ante-pituitary. Correspondingly, he was more speculative and poetic intellectually than his grandson, and more irascible and imperious in his moods.
After 1872, when Charles Darwin was sixty-three years old, a marked change for the better occurred in his health. For the last ten years of his life the condition of his health was a cause of satisfaction and hope to his family. "He was able to work more steadily with less fatigue and distress afterwards." This is probably to be explained as following the gonadopause hi him—the cessation of activity of the interstitial cells. After this event, the adrenals in the male nearly always function more efficiently, and well being is improved even though the blood pressure often rises coincidently. In the relative vigor of that decade we have another bit of evidence that the adrenals had much to say over Darwin's life.