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Healthy Diet Could Reverse Alzheimer's in Early Stages

by VR Sreeraman on June 9, 2010 at 4:58 PM
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 Healthy Diet Could Reverse Alzheimer's in Early Stages

A new study by researchers at Temple University has shown that patients in the early to moderate stages of Alzheimer's disease could have their cognitive impairment slowed or even reversed by switching to a healthier diet.

In a previous study, researchers led by Domenico Pratico, an associate professor of pharmacology in Temple's School of Medicine, demonstrated that a diet rich in methionine could increase the risk of developing Alzheimer's Disease. Methionine is an amino acid typically found in red meats, fish, beans, eggs, garlic, lentils, onions, yogurt and seeds.

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"The question we asked now as a follow-up is if, for whatever reason, you had made bad choices in your diet, is there a chance you can slow down or even reverse the disease or is it too late - that there is nothing you could do," said Pratico.

As in the previous study, the researchers fed one group of mice a diet high in methionine and another group a regular, healthy diet. After three months, they split the group receiving the methionine-rich diet into two, with one group continuing the amino-heavy diet while the second switched to the healthy diet for an additional two months.
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"At the end of the study, when we looked at these mice, what we found - very surprisingly - was that switching to a more healthy diet reversed the cognitive impairment that had built up over the first three months of eating the methionine-rich diet," said Pratico.

"This improvement was associated with less amyloid plaques - another sign of the disease - in their brains," Pratico added.

Pratico said that the cognitive impairment that had been observed in the mice after three months on the methionine-rich diet was completely reversed after two months on the healthier diet, and they were now able to function normally.

"We believe this finding shows that, even if you suffer from the early effects of MCI or Alzheimer's, switching to a healthier diet that is lower in methionine could be helpful in that memory capacity could be improved," he said.

Pratico stressed that this was not a drug therapy for curing MCI or Alzheimer's, but that it did demonstrate that a lifestyle change such as diet could improve some of the impairments that have already occurred in the brain.

"What it tells us is that the brain has this plasticity to reverse a lot of the bad things that have occurred; the ability to recoup a lot of things such as memory that were apparently lost, but obviously not totally lost," he said.

Pratico also emphasized that the researchers believe that in addition to switching to a healthy diet, patients diagnosed with MCI or Alzheimer's also need a regiment of physical as well as mental exercises.

"This combination won't cure you, but we believe, as we saw in this study, that it will be able to slow down or even possibly reverse the effects on the cognitive impairment," he said.

The study has been published in the Journal of the Federation of American Societies for Experimental Biology.

Source: ANI
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