What Clutter Does to Your Brain-and How to Fix It

Clutter might seem like a simple housekeeping issue, but experts say its impact runs far deeper-affecting how your brain functions, how you feel, and how well you're able to focus.

From a psychiatric and psychological standpoint, clutter isn't just "mess"-it's constant stimulation competing for your attention.

Dr. Clint Salo, a board-certified psychiatrist and medical director at The Grove Recovery Community, told Newsweek: "Clutter acts as a constant source of visual stimulation that competes for our attention. The brain has to work harder to filter out unnecessary information, which can contribute to mental fatigue and make it more difficult to focus, stay organized, and complete tasks."

That mental strain can build over time. When your surroundings are filled with objects, your brain is forced to process more than it needs to, using up valuable cognitive resources.

Michelle Drapkin, a board-certified psychologist and founder of The CBT Center, compares the effect to overloaded technology.

"Every object in your visual field is a potential distraction, and your brain registers all of it, whether you consciously notice it or not. I think of it like bandwidth on a WIFI network: the more devices running in the background, the slower everything gets," Drapkin said.

As a result, clutter doesn't just look overwhelming-it creates a measurable sense of stress. Research has linked cluttered environments to increased cortisol levels, according to Drapkin.

"A disorganized environment signals to your brain that there are unfinished tasks, loose ends, things not yet handled," she told Newsweek. "That low-level sense of incompletion creates a kind of ambient stress that’s easy to dismiss but hard to escape."

Salo echoed this, noting that clutter acts as a constant reminder of what still needs to be done. "For many people, a cluttered space creates a sense that there is always something left undone, which can contribute to anxiety and mental exhaustion," he said.

The effects don't stop there. Clutter can interfere with key brain functions including decision-making, memory, and productivity. When your environment is disorganized, your attention is repeatedly pulled away from the task at hand.

"Cognitively, it’s about reducing what we call ‘attentional capture,' the brain’s tendency to lock onto novel or out-of-place stimuli," Drapkin said. "Less visual noise means more mental space for actual work."

Some people, however, feel the impact of clutter more strongly than others. According to experts, this often comes down to individual differences in stress levels, personality, and mental health.

"Individuals who are already feeling overwhelmed or managing conditions such as anxiety, depression, or ADHD may be especially sensitive to environmental chaos," Salo said.

Drapkin added that upbringing also plays a role. People tend to gravitate toward what they are used to-whether that's a highly ordered space or a more chaotic one.

Experts stress that tackling clutter doesn't have to be overwhelming. In fact, small steps are often the most effective.

"Start really small. One corner of a desk. One shelf. One bag of things to donate," Drapkin said, suggesting time-limited sessions as a practical strategy. "Set a 10-minute timer, work until it goes off, then stop."

Kayleen Kelly, founder of Kayleen Kelly Home Organizing & Redesign, told Newsweek that breaking tasks into manageable chunks and reducing decision pressure.

"Decluttering is mentally, physically, and emotionally taxing, so breaking it into manageable chunks makes the process far more sustainable," she said.

She also recommends using her "three-seconds rule" when deciding what to keep and what to throw away.

"After you’ve categorized your items, make a decision on each one: Yes = Keep, No = Go. Try to make your decision within three seconds. If you hesitate or can’t decide, keep the item and keep moving forward," she said.

"This approach builds momentum, reduces the likelihood of regretting a decision, and makes the decluttering process feel emotionally and psychologically safe. Since fear of making the wrong choice is one of the biggest reasons people avoid decluttering in the first place, removing that pressure helps you stay focused, feel successful, and strengthen your decision-making skills over time."

Ultimately, the goal isn't perfection-but creating a space that works for you.

"It’s to create an environment that feels manageable, reduces stress, and supports overall mental well-being," Salo said.

Or, as Drapkin puts it, "The goal isn’t perfection. It’s making sure your environment is working for you, not against you."

2026 NEWSWEEK DIGITAL LLC.

This story was originally published June 14, 2026 at 5:00 AM.