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What does research say about aluminum and Alzheimer's disease?

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There is no credible research linking usage of aluminum-containing products with the development of Alzheimer's disease, according to Scientific American. Although researchers conducted studies in the 1970s and 1980s that suggested a link between aluminum and Alzheimer's disease, subsequent studies found that any such correlation was coincidental.

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In the 1970s, researchers found that exposing rabbits to aluminum caused nerve damage in the animals. Further studies showed that dialysis patients who had high levels of aluminum present in their bodies developed dementia. These studies led researchers to the erroneous conclusion that the use of aluminum-containing products, such as antiperspirants, leads to the development of Alzheimer's disease, explains Scientific American.

As of 2015, experts debunk claims of a link, asserting that rabbit brains are not similar enough to human brains to make a conclusion, notes Scientific American. Critics further dispute the idea that high levels of aluminum found in the toxic amyloid plaques formed in the brains of Alzheimer's suffers proved a link, noting subsequent research showing that the plaques attract aluminum ions. Moreover, humans are continuously exposed to aluminum, which is the third most common element on Earth. Refraining from use of aluminum-containing products would not reduce exposure to aluminum to any significant degree, explains Scientific American.

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