21/10/1910 Vitamin B12 may protect against Alzheimer's, according to a new study
Research suggests that older adults with large amounts of the active ingredient of the vitamin in blood are low risk of developing the disease, which affects the mind of one of every eight Americans age 65 years, according to the Alzheimer's Association.
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But that does not mean that taking vitamin B supplements protect mental deterioration.
last summer, a couple of studies reduced expectations that vitamin B, including B12 and folic acid, help patients who had had a stroke or heart attack.
"Further studies are needed before drawing conclusions about the role of vitamin B12 in neurodegenerative diseases like Alzheimer's," said Dr. Babak Hooshmand, the Karolinska Institute in Stockholm, Sweden. Their findings appear in the journal Neurology.
However, Hooshmand added that many older adults suffer from B12 deficiency, so that the results could be significant.
"indicate that vitamin B12 and related metabolites have a significant role in Alzheimer's," said lead author Reuters Health. With his team analyzed blood samples of 271 older adults without dementia in Finland.
In a second analysis seven years, researchers found that 17 (6 percent) had developed Alzheimer's.
That group had elevated levels of holotranscobalamin, the active portion of vitamin B12, and low levels of homocysteine, an amino acid associated with mental impairment, stroke and heart disease. Folic acid was not associated with Alzheimer's.
B vitamins reduce homocysteine \u200b\u200blevels and therefore attracted attention as a potential therapy economical and safe. But whether that's a sign or cause disease.
The neurologist Sudha Seshadri of Boston University, said he would not recommend the use of extra doses of vitamins B if a doctor did not diagnose signs of deficiency. "Too much folate with vitamin B12 deficiency would be harmful," he told Reuters Health.
He added: "A healthy diet with adequate levels of B12 help reduce the risk, despite the lack of clinical trials that demonstrate cognitive benefits."
Vitamin B12 is found in various foods such as milk, eggs, fish and meat.
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