October 20, 2012

Another danger of high carb diets - Alzheimer's

High-carb diets may raise the risk of Alzheimer's

Older people who eat a diet high in carbohydrates are four times more likely to develop mild cognitive impairment - a precursor to Alzheimer’s disease.
New research from the prestigious Mayo Clinic in America has found the risk is also higher with a diet high in sugar.

On the other hand, proteins and fats appear to offer some protection – people who consumed plenty of them are less likely  to suffer cognitive decline.
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If we can stop people from developing MCI, we hope we can stop people from developing dementia. Once you hit the dementia stage, it's irreversible,’ Professor Roberts told USA Today. 

‘A high-carbohydrate intake could be bad for you because carbohydrates impact your glucose and insulin metabolism.  'Sugar fuels the brain, so moderate intake is good. However, high levels of sugar may actually prevent the brain from using the sugar - similar to what we see with type 2 diabetes.’
She added that high glucose levels might affect the brain's blood vessels and play a role in the development of beta amyloid plaques, proteins toxic to brain health that are found in the brains of people with Alzheimer's. It’s thought these plaques are a leading cause of the disease.

People whose diets were highest in ‘good’ fats, such as those found in nuts and healthy oils were 42 per cent less likely to get cognitive impairment. Those with a  high intake of protein (such as meat and fish) had a reduced risk of 21 per cent.
Posted by Jill Fallon at October 20, 2012 10:37 AM | Permalink