Today it is a reality that most of us live glued to a screen, and this is something that is documented in studies that point out, for example, that on average we review an average of 200 times the phone throughout the day, which is equivalent to looking at it approximately every five minutes. In fact, 46% of users consider themselves “dependent” on the device and 53% say they have never spent more than 24 hours without it. But what really happens in our heads if we decide to cut corners and return to the analog era?
A test. To answer this question, CNN journalist Bill Weir decided to test this premise to commemorate Apple’s 50th anniversary. In this way, for 14 days Weir kept his iPhone in a box and replaced it with a basic phone like the ones we had 15 years ago, with which we could only send SMS with a non-touch keyboard and a low-resolution camera.
From here the sensations he had were observed, but a group of scientists behind him were also monitoring his brain through brain scans.
The results. After two weeks of disconnection, the journalist’s reaction times improved by 23%, and his brain activity also increased significantly, causing his brain connectivity to become more coordinated and organized.
Subjectively, Weir experienced a much better recovery in his ability to concentrate and also noted a sharp decrease in the need to consume social media after the first week.
The changes. It is no coincidence that the term “brain rot”, translated as brain rot, was crowned the neologism of the year in 2024 for the Oxford dictionary, since it is a concept closely linked to be swiping all the time with your mobile. And clearly the excessive use of smartphones and all the applications they contain is leaving a physical mark on our brain anatomy.
It’s proven. MRI-based research, including a National Library of Medicine publication in 2023, they point out that problematic smartphone use is associated with a reduction in gray matter in the brain. And if we go into something more specific, it was seen that there was a smaller volume in the anterior cingulate cortex, the orbitofrontal cortex, the fusiform gyrus and the striatum.
These areas are fundamental for emotional regulation, decision making and impulse control, making these alterations similar to those observed in addictions to harmful substances such as drugs.
And supported. A study published in 2025 analyzed individuals for 72 hours without a mobile phone using functional magnetic resonance imaging, and the results indicated that withdrawal triggered brain activations identical to those of addictive withdrawal syndromes, followed by notable cognitive improvements.
Digital amnesia. Beyond anatomy, our daily cognitive abilities are in free fall, and science suggests that the average attention time before an interruption has gone from about 2.5 minutes to about 47 seconds, blaming the accelerated digital pace here.
And the culprit again is the smartphone, since a study published in 2017 analyzed to 520 participants and demonstrated that the simple presence of the smartphone on the table, even face down, consumes and exhausts our cognitive attention resources. This is why we should opt for better control of the time we dedicate to social networks or the smartphone in general, since the benefits of quitting are many.
Images | freepik
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