Edythe London

Edythe London is a pharmacologist and professor whose brain-imaging research gives scientific form to one of the book’s central conflicts: whether addiction and relapse should be understood chiefly as choices or as consequences of a disease affecting the brain. Her work on people withdrawing from Methamphetamine suggests that early recovery can bring intense emotional distress and impaired thinking, complicating judgments about willpower and treatment participation without erasing the question of responsibility.

Researcher and Method

London trained in pharmacology and teaches psychiatry and biobehavioral sciences at the David Geffen School of Medicine at the University of California, Los Angeles. As an undergraduate, she took an aptitude test that identified medical illustration as a strength. The narrative presents her later use of functional brain imaging as a scientific counterpart to that aptitude: instead of drawing the brain, she makes its activity visible through images.

In 2000, London created images based on sixteen people who used Methamphetamine. After admission to hospital, the participants slept for two days, a pattern the narrative describes as common among people stopping the drug. Several days after they awoke, London scanned their brains. Positron emission tomography, or PET, measures activity through blood flow and biochemical reactions registered by radioactive tracers; depending on the marker, it can represent overall activity or that of a particular neurotransmitter. Her question was what condition the brain was in during the initial stages of withdrawal, when a patient first entered rehabilitation.

The image London shows the narrator is not an individual scan of Nic. It combines the sixteen participants’ PET scans with magnetic resonance images, which supply structural detail, and compares the resulting average with an average drawn from a control group. London assigns colors to differences in activity: blue indicates significantly less activity than in the comparison brains, while yellow, orange, and red mark significantly more. The composite gives the reader a visual argument about withdrawal, but it is also important to its interpretation that the image represents a group average rather than a personal diagnosis of Nic.

What the Images Show

One conspicuous patch, described as roughly the shape of a small, tailless mouse, appears in the posterior cingulate, a region associated in the account with pain and emotion. London explains that the activity there corresponds to what occurs while people feel pain, and that it remains relevant after a person stops using the drug. The narrator thinks of Nic, but only conditionally: if Nic were an average user, the illustrated pattern might apply to him. London’s research thus makes the possible biological burden of early recovery visible without claiming to have scanned or diagnosed him.

The scans also show more areas of heightened activity associated with both ongoing and situational anxiety than appear in the control subjects. London describes this image as distinctive among those for drug use: scans of people who abuse heroin, cocaine, or alcohol do not show the same changes. Elsewhere, a distinctly blue patch in the medial orbitofrontal cortex concerns her because activity in that area is related to decision-making. Alongside the brightly active posterior cingulate, it suggests that negative emotion and impaired decision-making may coincide, making clear thought more difficult.

For London, these patterns offer a biological account of difficulties clinicians already encounter: depression, anxiety, argumentativeness, and resistance to treatment. They also point to a severity that the narrator says had not previously been recognized. London’s interpretation is consequential but carefully bounded: some patients in early withdrawal may be unable, not merely unwilling, to participate in treatments demanding concentration, logic, and memory. Severe depression and anxiety, which she characterizes as a form of chronic agony, can further impede that participation. Her work reframes apparent refusal or failure to persist as something that may arise partly from the patient’s condition at that stage of recovery.

Treatment and Recovery

London’s research matters beyond the image itself because it bears on the length and design of treatment. The narrator connects her findings with the difficulty of expecting people in the first days of withdrawal to manage therapies that require sustained cognitive effort. Even after a month without the drug, depressive symptoms and pain may have eased for many people but remain substantial for others. In the narrator’s account, this helps explain why short detoxifications and programs of a few weeks may end before some patients are ready to take part meaningfully in ongoing care.

The implication is not that every patient follows the same course, or that treatment is futile. Rather, London’s images support the possibility that recovery of the brain takes longer than the brief periods many programs provide. The narrator reasons that programs likely to help may need to last for many months, and that patients may require at least a couple of months before they can engage substantially with treatment. He also notes the limits on access: long-term programs are scarce in many communities, and intensive continuing care can be prohibitively expensive or excluded from insurance coverage. London’s research therefore helps expose a mismatch between the duration of biological recovery and the duration of available care.

Place in the Book’s Debate

London appears as a researcher whose evidence sharpens, rather than settles, the book’s argument over addiction as illness and choice. At a family education session, the narrator resists the disease model because Nic’s drug use and its consequences seem to involve decisions. A counselor acknowledges that people make choices while arguing that addiction can take control and requires continuing recovery work. London is not presented as a participant in that exchange; her scans enter the narrative as a separate form of evidence that bears on the same dispute.

Later, the narrator considers the objection that describing addiction as a brain disease might excuse relapse. One position emphasizes the voluntary behavior with which addiction begins; another argues that recognizing biological change does not eliminate a person’s responsibility to take part in treatment. London’s findings contribute a concrete distinction to this discussion: the ability to choose treatment is not necessarily the same as having an unimpaired capacity to concentrate, reason, and endure the distress of early withdrawal. The book uses her work to complicate moral judgment, not to declare that agency has disappeared. Her significance lies in making the suffering and cognitive difficulty of withdrawal legible, while leaving recovery as an ongoing task that still requires participation.