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Although there are many studies that show aluminum is present in our brains, this research shows it is bound to blood proteins which limits its ability to enter the brain.
As such, no study has been done to determine if removal of aluminum from metal can improve cognition. This would be very difficult as most individuals with Alzheimer’s disease have enough aluminum accumulation to affect their cognitive function.
Aluminum toxicity is not an important factor in neurodegeneration because aluminum cannot freely pass through the BBB. Its passage would require pores that are too large for aluminum or its hydration products to fit.
Not enough information
Although aluminum is a common, non-metal, it has been linked to Alzheimer’s disease (AD) because of its positive charge. In fact, early research suggests that AD may be related to metal accumulation
For instance, one study looked at the relationship between aluminum concentration in brain tissue and number of neuritic plaques (NP), the physical symptoms of AD. They found that higher aluminum concentrations were correlated with more NPs.
Furthermore, another study conducted an autopsy on one person who had participated in a previous clinical trial for aricept(rivastigmine). This drug is used clinically to treat dementia due to AD.
They discovered that he had high levels of aluminum in his nucleus basalis of Meynert, which controls memories and learning. By comparing his case to other individuals who had taken part in the same trial but did not take the medication, they determined that the aluminium in his brain was responsible for his improvement under the medication.
More studies are necessary, however, to confirm this correlation.
Does Aluminum Build Up in the Blood?
There is no doubt that aluminum is an essential element of our diet, but too much can be harmful.
Excessive intake of aluminum has been linked to Alzheimer’s disease, as well as other diseases.
However, since it is so widely used, especially in cooking products, not everyone worries about their aluminum consumption.
Most people do need to worry about aluminum though, because it is also commonly found in your body.
It is easily absorbed through the skin and is present in every tissue. About one-third of everyday exposure to aluminum comes from foods, such as vegetables, nuts, and tofu; the rest comes from beverages, including water (drinking more may help reduce aluminum accumulation in the brain), coffee, tea, and wine.
The average person may ingest 500 mg of aluminum per day, mostly from food, drinks, and dust. Research suggests that aluminum poses only minimal health concerns for humans. For animals, however, it may be a threat to their nervous systems.
Studies show that even at very high levels, acute exposure to aluminum does not result in significant health concerns. However, with continued exposure, learning disabilities and dementia may develop.
Furthermore, research indicates that overexposure to aluminum may lead to inflammation and oxidative stress, both of which can promote cancer.
Too many questions
There are so many unanswered questions about aluminum that it’s difficult to know where to start.
For instance, scientists have known for decades that antiperspirant salts contain an element called aluminum, but only recently has research linked excessive amounts of this metal in humans to disease.
Aluminum is used as a coating around common products such as soft drink cans, water bottles, food packaging, and cookware. But even small amounts can be harmful.
As evidence grows linking low levels of aluminum with health problems, researchers say it will take time to determine how much people need before protection. For now, they recommend staying within ranges already established by scientific studies.
These recommendations cover exposure from foods, drinking liquids, medications, skin care products, dietary supplements, and other substances. Exposure from any one source should not exceed 2–3 mg per day.