Alzheimer's disease has long remained a mystery, but new research sheds light on its origins. It turns out that the destruction of neurons may be caused by a common bacterium residing in the oral cavity, making daily tooth brushing unexpectedly important.
The Unexpected Link Between Teeth and the Brain
Scientists have made a remarkable discovery, publishing the results of their research in Science Advances. They found periodontal bacteria in 90% of patients suffering from Alzheimer's disease. The main culprit of gum disease, the bacterium Porphyromonas gingivalis, is capable of penetrating the brain directly through the bloodstream. This means that inflammation in the oral cavity may not just be a contributing factor but a key trigger for memory destruction.
How Bacteria Attack the Brain
Once in the brain, the bacterium P. gingivalis begins to actively produce special enzymes known as gingipains. These enzymes literally cut and destroy protein connections within neurons. As a result of this action, tau protein accumulates and amyloid plaques form. These "garbage" deposits ultimately lead to the brain gradually losing its connection to reality.
The Long Path of Destruction
Experiments on mice have convincingly shown that bacteria, having entered the oral cavity, can be found in the brain within just a few weeks. This fact helps to understand why people suffering from chronic periodontitis and gum inflammation face significantly higher rates of dementia in old age.
Alzheimer's disease develops over decades. During this time, the bacterium slowly but surely "eats away" vital neural connections, leading to irreversible changes.
Treatment Prospects
There is good news: scientists have managed to develop small molecule inhibitors. These innovative substances have the ability to block the action of gingipains, thereby protecting the brain from destructive bacterial attacks.
Clinical trials of these potential drugs are actively ongoing. They are already showing quite promising results in slowing the progression of Alzheimer's disease symptoms.
The Role of Chewing Gum
Although chewing gum is not a medicine, its use with xylitol after meals can help reduce the number of harmful bacteria in the oral cavity. Moreover, scientists are actively working on creating specialized therapeutic chewing gums.
These future developments could literally "trap" the pathogens of Alzheimer's disease. This will prevent their harmful effects on the brain before they have a chance to cause damage.
Our body is a single, interconnected system. The invisible struggle occurring in the gums can lead to fatal consequences for intelligence 20–30 years later.
Thus, daily care for oral hygiene today is a crucial investment in preserving your memory and clarity of mind for many years to come.
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