Sunday, 5 July 2009 23:10 UK

Coffee 'may reverse Alzheimer's'

A possible treatment for dementia?

Drinking five cups of coffee a day could reverse memory problems seen in Alzheimer's disease, US scientists say.

The Florida research, carried out on mice, also suggested caffeine hampered the production of the protein plaques which are the hallmark of the disease.

Previous research has also suggested a protective effect from caffeine.

But British experts said the Journal of Alzheimer's disease study did not mean that dementia patients should start using caffeine supplements.

Quote

The results are particularly exciting in that a reversal of pre-existing memory impairment is more difficult to achieve

Dr Gary Arendash

University of Florida

Unquote

The 55 mice used in the University of Florida study had been bred to develop symptoms of Alzheimer's disease.

First the researchers used behavioural tests to confirm the mice were exhibiting signs of memory impairment when they were aged 18 to 19 months, the equivalent to humans being about 70.

Then they gave half the mice caffeine in their drinking water. The rest were given plain water.

The mice were given the equivalent of five 8 oz (227 grams) cups of coffee a day - about 500 milligrams of caffeine.

The researchers say this is the same as is found in two cups of "specialty" coffees such as lattes or cappuccinos from coffee shops, 14 cups of tea, or 20 soft drinks.

When the mice were tested again after two months, those who were given the caffeine performed much better on tests measuring their memory and thinking skills and performed as well as mice of the same age without dementia.

Those drinking plain water continued to do poorly on the tests.

In addition, the brains of the mice given caffeine showed nearly a 50% reduction in levels of the beta amyloid protein, which forms destructive clumps in the brains of dementia patients.

Further tests suggested caffeine affects the production of both the enzymes needed to produce beta amyloid.

The researchers also suggest that caffeine suppresses inflammatory changes in the brain that lead to an overabundance of the protein.

Earlier research by the same team had shown younger mice, who had also been bred to develop Alzheimer's but who were given caffeine in their early adulthood, were protected against the onset of memory problems.

'Safe drug'

Dr Gary Arendash, who led the latest study, told the BBC: "The results are particularly exciting in that a reversal of pre-existing memory impairment is more difficult to achieve.

"They provide evidence that caffeine could be a viable 'treatment' for established Alzheimer's disease and not simply a protective strategy.

"That's important because caffeine is a safe drug for most people, it easily enters the brain, and it appears to directly affect the disease process."

The team now hope to begin human trials of caffeine to see if the mouse findings are replicated in people.

They do not know if a lower amount of caffeine would be as effective, but said most people could safely consume the 500 milligrams per day.

However they said people with high blood pressure, and pregnant women, should limit their daily caffeine intake.

Rebecca Wood, chief executive of the Alzheimer's Research Trust, said: "In this study on mice with symptoms of Alzheimer's, researchers found that caffeine boosted their memory. We need to do more research to find out whether this effect will be seen in people.

"It is too early to say whether drinking coffee or taking caffeine supplements will help people with Alzheimer's.

-- BBC

marshbags

Dear Marshbags,

How are you?

You will not be surprised to hear I cannot support coffee for health - alzheimer's or not, now I don't drink it.

However I do have a bad-tasting healthy alternative that might be of interest - rejuvelac.

Check http://mastering-health.com/blogs/gee/rejuvelac

This is very good for the digestive system, and one time a Thai neighbour visited and told me that she had just returned from a daily trip to drink "nam khao klong", and it turned out to be the same thing. Once you've tasted it you might not think it helps with alzheimer's (!), I quickly got used to the taste and take it daily.

Hope you are keeping well,

All the Best,

BillZ

http://ginsukapaapdee.wordpress.com/

That's nice to hear, I drink average 8 cups a day. So I would become a hundred years old?

" a Thai neighbour visited and told me that she had just returned from a daily trip to drink "nam khao klong"

It is the KLONG part what worries me....

Seems like only yesterday they were telling us that coffee is bad for you and to drink tea. Gotta justify their jobs somehow.

Seems like only yesterday they were telling us that coffee is bad for you and to drink tea. Gotta justify their jobs somehow.

Key word "yesterday"; I will have you know sir that medicine is a progressive science and tomorrow there is bound to be another advice...

Up to 400mg per day seems the "moderated" view (4 cups of brewed coffee) will have beneficial effects on memory, cholesterol and even blood circulation.

Add to that perhaps, as per recent postings on TV, a few drops of Hydrogen Peroxide and, so it would seem to me, we are well on our way to the supreme elixer of life!

I have a cup of coffee every morning with my platypus steak and mashed potatoes in my ears Q tip.

What?

mmm why can't I remember where I put the mug I just made then???

mmm why can't I remember where I put the mug I just made then???

Because you didn't drink the contents before you lost said mug.

It's not the coffee; it's the caffeine. I drink 2.5 liters of Pepsi Max daily (how many mg of caffeine is that?).

I drink 2.5 liters of Pepsi Max daily

Any particular reason PB?

It's not the coffee; it's the caffeine. I drink 2.5 liters of Pepsi Max daily (how many mg of caffeine is that?).

Do you still have your own teeth?

No teeth - soft enamel got dissolved by the carbonic acid.

It tastes good; sugar free, no alcohol, no calories.

No teeth - soft enamel got dissolved by the carbonic acid.

It tastes good; sugar free, no alcohol, no calories.

so you can let the artifical sweeteners ruin your kidney's................good one PB.

I wonder what a mouse loaded with half a gram of caffeine looks like...

I've seen more than one research that linked freshly ground coffee to other positive health benefits which were colon and stomach related.

I wonder what a mouse loaded with half a gram of caffeine looks like...

Speedy gonzales.

It just goes to prove that everything in moderation is the best. Butter, coffee, alcohol, palm oil and MANY other things were NO good for you but the next report says they ARE good for you. Use a little judgment and don't believe everything you read.