How to be Alone. Jonathan Franzen

month fretting about ordinary mental illness being trendily misdiagnosed as Alzheimer’s.”

      From my current vantage, where I spend a few minutes every month fretting about what a self-righteous thirty-year-old I was, I can see my reluctance to apply the term “Alzheimer’s” to my father as a way of protecting the specificity of Earl Franzen from the generality of a nameable condition. Conditions have symptoms; symptoms point to the organic basis of everything we are. They point to the brain as meat. And, where I ought to recognize that, yes, the brain is meat, I seem instead to maintain a blind spot across which I then interpolate stories that emphasize the more soul-like aspects of the self. Seeing my afflicted father as a set of organic symptoms would invite me to understand the healthy Earl Franzen (and the healthy me) in symptomatic terms as well—to reduce our beloved personalities to finite sets of neurochemical coordinates. Who wants a story of life like that?

      Even now, I feel uneasy when I gather facts about Alzheimer’s. Reading, for example, David Shenk’s book The Forgetting: Alzheimer’s: Portrait of an Epidemic, I’m reminded that when my father got lost in his own neighborhood, or forgot to flush the toilet, he was exhibiting symptoms identical to those of millions of other afflicted people. There can be comfort in having company like this, but I’m sorry to see the personal significance drained from certain mistakes of my father’s, like his confusion of my mother with her mother, which struck me at the time as singular and orphic, and from which I gleaned all manner of important new insights into my parents’ marriage. My sense of private selfhood turns out to have been illusory.

      Senile dementia has been around for as long as people have had the means of recording it. While the average human life span remained short and old age was a comparative rarity, senility was considered a natural by-product of aging—perhaps the result of sclerotic cerebral arteries. The young German neuropathologist Alois Alzheimer believed he was witnessing an entirely new variety of mental illness when, in 1901, he admitted to his clinic a fifty-one-year-old woman, Auguste D., who was suffering from bizarre mood swings and severe memory loss and who, in Alzheimer’s initial examination of her, gave problematic answers to his questions:

      “What is your name?”

      “Auguste.”

      “Last name?”

      “Auguste.”

      “What is your husband’s name?”

      “Auguste, I think.”

      When Auguste D. died in an institution, four years later, Alzheimer availed himself of recent advances in microscopy and tissue-staining and was able to discern, in slides of her brain tissue, the striking dual pathology of her disease: countless sticky-looking globs of “plaque” and countless neurons engulfed by “tangles” of neuronal fibrils. Alzheimer’s findings greatly interested his patron Emil Kraepelin, then the dean of German psychiatry, who was engaged in a fierce scientific battle with Sigmund Freud and Freud’s psycholiterary theories of mental illness. To Kraepelin, Alzheimer’s plaques and tangles provided welcome clinical support for his contention that mental illness was fundamentally organic. In his Handbook of Psychiatry he dubbed Auguste D.’s condition Morbus Alzheimer.

      For six decades after Alois Alzheimer’s autopsy of Auguste D., even as breakthroughs in disease prevention and treatment were adding fifteen years to life expectancy in developed nations, Alzheimer’s continued to be viewed as a medical rarity à la Huntington’s disease. David Shenk tells the story of an American neuropathologist named Meta Naumann who, in the early fifties, autopsied the brains of 210 victims of senile dementia and found sclerotic arteries in few of them, plaques and tangles in the majority. Here was ironclad evidence that Alzheimer’s was far more common than anyone had guessed; but Naumann’s work appears to have persuaded no one. “They felt that Meta was talking nonsense,” her husband recalled.

      The scientific community simply wasn’t ready to consider that senile dementia might be more than a natural consequence of aging. In the early fifties there was no self-conscious category of “seniors,” no explosion of Sun Belt retirement communities, no AARP, no Early Bird tradition at low-end restaurants; and scientific thinking reflected these social realities. Not until the seventies did conditions become ripe for a reinterpretation of senile dementia. By then, as Shenk says, “so many people were living so long that senility didn’t feel so normal or acceptable anymore.” Congress passed the Research on Aging Act in 1974, and established the National Institute on Aging, for which funding soon mushroomed. By the end of the eighties, at the crest of my annoyance with the clinical term and its sudden ubiquity, Alzheimer’s had achieved the same social and medical standing as heart disease or cancer—and had the research funding levels to show for it.

      What happened with Alzheimer’s in the seventies and eighties wasn’t simply a diagnostic paradigm shift. The number of new cases really is soaring. As fewer and fewer people drop dead of heart attacks or die of infections, more and more survive to become demented. Alzheimer’s patients in nursing homes live much longer than other patients, at a cost of at least forty thousand dollars annually per patient; until they’re institutionalized, they increasingly derange the lives of family members charged with caring for them. Already, five million Americans have the disease, and the number could rise to fifteen million by 2050.

      Because there’s so much money in chronic illness, drug companies are investing feverishly in proprietary Alzheimer’s research while publicly funded scientists file for patents on the side. But because the science of the disease remains cloudy (a functioning brain is not a lot more accessible than the center of the earth or the edge of the universe), nobody can be sure which avenues of research will lead to effective treatments. Overall, the feeling in the field seems to be that if you’re under fifty you can reasonably expect to be offered effective drugs for Alzheimer’s by the time you need them. Then again, twenty years ago, many cancer researchers were predicting a cure within twenty years.

      David Shenk, who is comfortably under fifty, makes the case in The Forgetting that a cure for senile dementia might not be an entirely unmitigated blessing. He notes, for example, that one striking peculiarity of the disease is that its “sufferers” often suffer less and less as it progresses. Caring for an Alzheimer’s patient is gruelingly repetitious precisely because the patient himself has lost the cerebral equipment to experience anything as a repetition. Shenk quotes patients who speak of “something delicious in oblivion” and who report an enhancement of their sensory pleasures as they come to dwell in an eternal, pastless Now. If your short-term memory is shot, you don’t remember, when you stoop to smell a rose, that you’ve been stooping to smell the same rose all morning.

      As the psychiatrist Barry Reisberg first observed twenty years ago, the decline of an Alzheimer’s patient mirrors in reverse the neurological development of a child. The earliest capacities a child develops—raising the head (at one to three months), smiling (two to four months), sitting up unassisted (six to ten months)—are the last capacities an Alzheimer’s patient loses. Brain development in a growing child is consolidated through a process called myelinization, wherein the axonal connections among neurons are gradually strengthened by sheathings of the fatty substance myelin. Apparently, since the last regions of the child’s brain to mature remain the least myelinated, they’re the regions most vulnerable to the insult of Alzheimer’s. The hippocampus, which processes short-term memories into long-term, is very slow to myelinize. This is why we’re unable to form permanent episodic memories before the age of three or four, and why the hippocampus is where the plaques and tangles of Alzheimer’s first appear. Hence the ghostly apparition of the middle-stage patient who continues to be able to walk and feed herself even as she remembers nothing from hour to hour. The inner child isn’t inner anymore. Neurologically speaking, we’re looking at a one-year-old.

      Although Shenk tries valiantly to see a boon in the Alzheimer’s patient’s childish relief from responsibility and childlike focus on the Now, I’m mindful that becoming a baby again was the last thing my father wanted. The stories he told from his childhood in northern Minnesota were mainly (as befits a depressive’s recollections) horrible: brutal father, unfair mother, endless chores, backwoods poverty, family betrayals, hideous accidents. He told me more than once, after his retirement,