
Scientists Have Finally Figured Out What Causes ‘Hoarding’

When most people imagine hoarding, they picture homes buried under mountains of belongings, narrow pathways carved through clutter, and rooms rendered unusable by objects that seem to have no value at all. These dramatic images, often amplified by reality television and viral documentaries, have shaped the public’s perception of hoarding as something extreme, shocking, and almost incomprehensible.
But these portrayals only skim the surface. The reality of hoarding is far more subtle, personal, and emotionally complex.
In most cases, hoarding behaviors do not suddenly appear in adulthood. They begin quietly, often years—or even decades—before they become visible to others. Despite growing public fascination, scientific understanding of hoarding is still relatively new. In fact, hoarding disorder was not officially recognized as its own diagnosis until 2013, when it was included in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5).
That long delay in recognition has had serious consequences. Without a clear diagnosis, many people went untreated, misunderstood, or dismissed as lazy or irresponsible. Today, however, emerging research is beginning to reveal where hoarding starts, why it persists, and how a more compassionate, effective approach could make a real difference.
The Quiet Origins of Hoarding
Contrary to popular belief, hoarding rarely begins with chaos. For many people, its roots stretch back to childhood or early adolescence. Retrospective studies suggest that the first signs often appear between the ages of 11 and 15—a developmental period already marked by emotional sensitivity, identity formation, and heightened stress.
In one detailed doctoral study, adults who identified as having hoarding tendencies were interviewed about their early experiences. Many recalled forming intense emotional attachments to their possessions as children. Objects were not just things—they were extensions of memory, comfort, and identity. Letting go felt painful, distressing, or even threatening.
Several participants reported that their difficulties worsened during major life transitions, such as starting university or graduating. One individual described losing access to student accounts and structured support systems as a turning point, explaining that the sudden responsibility of adulthood intensified his need to hold onto material stability.
A recurring theme in these accounts involved childhood experiences with parents who discarded belongings without permission or pressured children to “clean up” without acknowledging emotional attachment. While usually well-intended, these actions often left lasting emotional scars. Research suggests that when a child’s attachment to objects is dismissed or overridden, it can deepen anxiety and actually reinforce hoarding behaviors rather than resolve them.
Why Letting Go Can Feel So Painful
At the core of hoarding lies an unusually strong emotional bond with objects. While most people feel sentimental about a few meaningful items, individuals who hoard may attach emotional significance to a much broader range of possessions—items others might see as trivial, broken, or disposable.
An old receipt may represent a specific day. A worn-out appliance may symbolize self-sufficiency. A stack of papers might feel like proof of responsibility or preparedness. Discarding these items can feel like erasing memories, losing control, or abandoning parts of oneself.
This emotional complexity is why hoarding cannot be reduced to messiness or laziness. It is not a failure of character—it is a deeply human response shaped by experience, vulnerability, and meaning.
Different Paths Into Hoarding
Hoarding does not follow a single pattern. For some, the behavior emerges gradually without a clear trigger. For others, it is sparked or intensified by stressful life events. Research points to several contributing factors, including:
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Difficulty processing or organizing information
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Early emotional neglect or trauma
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Anxiety and perfectionism
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Loss, grief, or major life transitions
A common thread is the tendency to assign symbolic value to objects. Some individuals fear that discarding items means losing memories. Others hold onto things “just in case,” driven by anxiety about future scarcity or regret.
Events such as the death of a loved one, divorce, illness, or relocation can further destabilize a person’s sense of control. In these moments, keeping possessions may feel like the only way to anchor oneself in a world that suddenly feels uncertain.
When Accumulation Becomes Dangerous
Left unaddressed, hoarding behaviors often intensify over time. What begins as manageable clutter can eventually interfere with daily functioning. Kitchens become unusable. Beds disappear under piles. Fire hazards, sanitation issues, and health risks increase.
Yet even when conditions become severe, many people delay seeking help. Media portrayals that frame hoarding as shameful or extreme discourage individuals from recognizing themselves in the diagnosis. Others assume that unless their home resembles a television episode, their behavior doesn’t “count.”
Mental health professionals emphasize that hoarding exists on a spectrum. Not all clutter is hoarding, and not all hoarding looks the same. The key question is impact: Does it interfere with safety, relationships, or quality of life?
Rethinking Hoarding: The “Struggling to Manage” Model
To better understand hoarding beyond symptoms, one doctoral researcher proposed the “struggling to manage” model. Rather than focusing solely on thoughts or behaviors, this framework looks at life circumstances that make managing possessions overwhelming.
According to this model, hoarding is often less about wanting more things and more about being overloaded—emotionally, physically, or cognitively. Events like moving house, declining health, caregiving responsibilities, or repeated stressors can make sorting and discarding feel impossible.
This shift in perspective encourages empathy. Instead of asking, “Why won’t they just get rid of it?” the question becomes, “What’s making life so overwhelming right now?”
The Power of Early and Compassionate Support
Hoarding does not have to escalate into crisis. Early support can dramatically change outcomes. When children showing hoarding tendencies are met with understanding rather than punishment, they can learn healthier ways to cope with attachment and anxiety.
The same applies to adults. Intervening before behaviors become entrenched can reduce distress and prevent serious risks. Cognitive behavioral therapy has shown promise, but support also comes from education, community resources, and nonjudgmental conversations.
Organizations such as Clouds End provide practical guidance, peer support, and educational tools that help individuals feel less isolated and more capable of change. These resources emphasize dignity, not shame.
Looking Beyond the Clutter
Ultimately, hoarding is not about objects—it’s about people. It’s about loss, memory, fear, and the universal desire for security. Every pile tells a story, and every object represents an attempt to cope with life’s uncertainties.
If hoarding is a language, then clutter is not noise—it is communication.
By continuing to research, listen, and replace judgment with understanding, society can move toward more humane and effective ways of supporting those who struggle to let go. Because behind every crowded room is a person who deserves compassion, not condemnation.
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