13 Surprising Facts About Hoarding

Think of your most valued possession.  Your jewelry? That box of precious family photos?  Baseball memorabilia? Now, imagine feeling that way about every single item in your house.  Welcome to the mindset of hoarding disorder.  This week, Savvy Psychologist has 13 surprising facts about hoarding.

Ellen Hendriksen, PhD
7-minute read
Episode #42

No one knows the true prevalence of hoarding, but a 2013 study in the British Journal of Psychiatry estimates that it affects a minimum of 1.5% of the population, which equals 4.5 million Americans.  And because hoarding disorder is isolating and often hidden, you can bet the number is much higher - in fact, the International OCD Foundation estimates up to 5% of us are hoarders.  

You can’t tell for sure without going inside a house or apartment, of course, but there are outward signs that stuff may be overloading a life - the backseat of the car filled to the windows, a yard filled with junk, or constantly carrying around a bunch of overflowing bags "just in case."

What Is Hoarding?

Put simply, collecting, saving, or being a pack rat crosses the line into hoarding disorder when all those possessions cause distress to the individual or interfere with living a normal life.

Hoarding often makes a home unable to be used as intended, which spirals into wrecking hoarders’ lives in other ways.  

For example, because hoarders are usually embarrassed or ashamed to let people into their homes, something as simple as an out-of-reach burned-out light bulb might go unchanged for years.  In fact, a 2001 study of hoarders over the age of 60 found that 45% couldn’t use their refrigerator (it was either buried, broken, or filled with non-food stuff), 42% couldn’t use their bathtub, and 10% couldn’t use - or even reach - their toilet.  Likewise, there are often legal ramifications, especially if the property is rented, or unsanitary due to animals or trash that is hoarded.  And of course, the emotional turmoil of feeling controlled by stuff isn’t to be taken lightly..


Follow any case of hoarding back to the roots and you’ll find a complex web of genetics, neurology, and psychology.  So let’s go beyond the piles and chaos to paint a more complex picture of hoarders.  This week, here are 13 surprising facts you may not know about hoarding disorder:

13 Surprising Facts About Hoarding

Fact #1: Hoarders fill up any space they’re given, from a studio apartment to a mansion, as in the famous case of the Collyer Brothers in 1940s New York City.  Therefore, forced purges or storage units offer only a temporary reprieve and worse, leave the hoarder feeling traumatized and violated.  Speaking of storage, many hoarders rent multiple storage units, which in combination with buying stuff, often drains their finances.

Fact #2: As of 2013, hoarding is its own disorder.  Hoarding used to be considered a form of OCD, but recent research has exposed important differences.  For instance, OCD primarily feels bad - obsessions make one anxious, and compulsions that attempt to relieve that anxiety aren’t necessarily pleasant (a relief, to be sure, but not exactly joyful).  Hoarding, by contrast, involves quite a bit of joy.  Many people who hoard love the thrill of discovering a treasure for free, the high of buying that perfect item, or the feeling of connection when finding an item to give to a friend.  These good feelings are hard to give up and are part of what makes hoarding so hard to treat.  

Fact #3: Over one-third of hoarders also have ADHD.  Hoarders often have a really hard time making decisions, planning activities, paying attention, and prioritizing.  Everything is of equally vital importance, from their passport to that lone chopstick.  Sound like ADHD?  You’re right - a 2010 study found that over one-third of hoarders also met criteria for an ADHD diagnosis.

Facts #4 and 5: Hoarding runs in families.  Also, hoarders are often survivors of trauma or neglect.   Hoarding is at least partially genetic, so it’s not uncommon to see siblings or other relatives with the disorder.  And many, but not all, hoarders have a trauma or childhood abuse or neglect lurking somewhere in their background.  Now, that’s not to say that all hoarders were abused - indeed, traumas from anytime in the lifespan can set it off, and sometimes hoarding arises despite a perfectly peaceful life.  But to use a somewhat traumatic analogy, you could say that genetics loads the gun and trauma (often) pulls the trigger.

Fact #6: Hoarders don’t all hoard for the same reasons.  Some hoard things they think of as extensions of themselves - personal memorabilia or everyday items from their lives.  Others hoard things that remind them of people they love - those 40 jars of mustard turn out to be a sister’s favorite brand.  Some hoard things they think are useful or will come in handy one day; even things like rusty nails or discarded wire has a potential use.  Still others see themselves as stewards of a certain item, like every New York Times issue since 1968 (even if the ones in the garage are moldy).  

Fact #7: Paper hoarding is often about the information.  Folks who hoard newspapers, magazines, junk mail, or other papers aren’t necessarily interested in the items themselves; they’re interested in the information printed on that paper.  Oftentimes, they don’t even read what’s on the paper - just perceiving they have the information at their fingertips (which will surely come in handy someday) - is the point.


All content here is for informational purposes only. This content does not replace the professional judgment of your own mental health provider. Please consult a licensed mental health professional for all individual questions and issues.

About the Author

Ellen Hendriksen, PhD

Dr. Ellen Hendriksen was the host of the Savvy Psychologist podcast from 2014 to 2019. She is a clinical psychologist at Boston University's Center for Anxiety and Related Disorders (CARD). She earned her Ph.D. at UCLA and completed her training at Harvard Medical School. Her scientifically-based, zero-judgment approach is regularly featured in Psychology Today, Scientific American, The Huffington Post, and many other media outlets. Her debut book, HOW TO BE YOURSELF: Quiet Your Inner Critic and Rise Above Social Anxiety, was published in March 2018.