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A study published in 2022 found a tenuous but plausible link between picking your nose and an increased risk of developing dementia. In cases where picking at your nose causes internal tissue damage, critical species of bacteria have a clearer path to the brain, which responds to their presence in ways that resemble signs of There are numerous caveats here, not the least of which is that the supporting research so far is in mice rather than humans, but the findings are definitely worth further investigation – and could improve our understanding of how Alzheimer's disease starts, which remains something of a mystery.
The video below has a summary of the study's findings:What's more, when there was damage to the nasal epithelium , nerve infections got worse. This led to the mouse brains depositing more of the amyloid-beta protein – a protein that is released in response to infections.can go directly up the nose and into the brain where it can set off pathologies that look like Alzheimer's disease,""We saw this happen in a mouse model, and the evidence is potentially scary for humans as well."took hold in the central nervous system of the mice, with infection happening within 24 to 72 hours. It's thought that bacteria and"It's research that has been proposed by many people, but not yet completed. What we do know is that these same bacteria are present in humans, but we haven't worked out how they get there."While the benefits aren't clear, studies like this one should give us pause before picking. Future studies into the same processes in humans are planned – but until then, St John and his colleagues suggest that picking your nose and plucking your nose hair is"not a good idea" because of the potential damage it does to protective nose tissue. "If you damage the lining of the nose, you can increase how many bacteria can go up into your brain." One outstanding question that the team will be looking to answer is whether or not the increased amyloid-beta protein deposits are a natural, healthy immune response that can be reversed when the infection is fought off.that nose picking could play a role in increasing the risk of developing Alzheimer's disease – revealing more about how the process could unfold.scientists are taking in trying to understand it – but each piece of research brings us a little bit closer to finding a way to stop it. "Once you get over 65 years old, your risk factor goes right up, but we're looking at other causes as well, because it's not just age – it is environmental exposure as well,"Big breakthroughs. Bold ideas. Straight to your inbox.
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Cats meow more at men to get their attention, study suggestsJames is Live Science’s production editor and is based near London in the U.K. Before joining Live Science, he worked on a number of magazines, including How It Works, History of War and Digital Photographer. He also previously worked in Madrid, Spain, helping to create history and science textbooks and learning resources for schools.
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