Is AI making us dumber? New study finds shocking brain impact
A new study has found the unseen effects artificial intelligence (AI) has on human cognitive function, and it's not looking good.
A growing body of research is raising an uncomfortable question: Are we relying on AI so much that it’s starting to affect how we think?
According to a report by BBC, scientists are beginning to see real cognitive changes linked to the use of AI tools like ChatGPT, Google Gemini and Claude.
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What researchers are seeing
Research scientist Nataliya Kosmyna from the Massachusetts Institute of Technology noticed something strange:
Students were submitting near-identical, overly polished work, and many struggled to remember what they had just written.
That raised a red flag. Were students outsourcing their thinking to AI?
The experiment that raised eyebrows
Kosmyna and her team ran a study with 54 students, splitting them into three groups:
- One used AI (ChatGPT)
- One used search engines
- One used no technology at all
The result showed that students who used their own brains showed high levels of brain activity (described as “on fire”).
However the AI group showed that their brain activity dropped by up to 55%.
That’s a massive difference.
Researchers found less activity in areas linked to creativity and deep thinking.
Memory and thinking took a hit
It wasn’t just brain activity. Students who used AI struggled to quote their own work, felt less ownership over what they wrote and were more likely to accept AI answers without questioning them.
Some researchers are calling this “cognitive offloading” - basically letting AI do the thinking for you. Others go even further, calling it “cognitive surrender”.
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It’s not just students
The effects go beyond the classroom. Other studies found that people using AI tools showed lower mental effort.
Even professionals became worse at tasks after relying on AI assistance and over time, less brain activity could be linked to cognitive decline.
That’s the part that has scientists worried.
So is AI the problem?
Not exactly. Experts say AI can be incredibly useful, but only if it’s used the right way.
The danger comes when people:
- Copy answers without thinking
- Stop questioning information
- Rely on AI for basic tasks
In short: It becomes a serious problem when AI replaces thinking instead of supporting it.
The smarter way to use AI
Researchers suggest a simple shift:
- Think first, use AI second
- Use AI to challenge your ideas, not replace them
- Treat it like a tool, not a shortcut
One expert even suggests using a “nemesis prompt” - asking AI to criticise your ideas so you’re forced to think deeper.
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