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Friday, December 12, 2025

We may be overestimating the association between gut bacteria and disease, machine learning study finds

Many bacterial-linked illnesses, such as inflammatory bowel disease or colorectal cancer, are associated with an overgrowth of gut bacteria thought to be bad actors. But when researchers used a machine learning algorithm to predict the density of microbes -- called microbial load, from their gut microbiomes, they found that changes in microbial load, rather than the disease, could be a driver behind the presence of disease-associated microbial species.

In 10 seconds, an AI model detects cancerous brain tumor often missed during surgery

Researchers have developed an AI powered model that -- in 10 seconds -- can determine during surgery if any part of a cancerous brain tumor that could be removed remains.The technology, called FastGlioma, outperformed conventional methods for identifying what remains of a tumor by a wide margin. Researchers say it has the potential to change the field of neurosurgery by immediately improving comprehensive management of patients with diffuse gliomas.

How to reduce social media stress by leaning in instead of logging off

Young people's mental health may depend on how they use social media, rather than how much time they spend using it. Psychology researchers tried an experiment with three groups. They asked one group to stay off social media. They taught another group how to use it more constructively. The third group stuck with their usual routine. The group that stayed away, AND the group that used it differently, both reported improvements in their mental health.

Brain-training games remain unproven, but research shows what sorts of activities do benefit cognitive functioning

Some 2.3 million of U.S. adults over 65 – more than 4% – have a diagnosis of dementia ^[1]. But even without a diagnosis, a certain amount of cognitive decline is normal as age sets in.

And whether it’s due to fear of cognitive decline or noticing lapses in cognition when we are stressed, many of us have had moments when we thought we could use an extra cognitive boost.

The good news is research has shown that...

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