Drinking fruit and vegetable juices frequently may significantly cut the risk of developing Alzheimer's disease, a study suggests.
一項研究指出，常喝果菜汁可以大幅降低罹患阿滋海默症（老人失智症）的風險。

US researchers followed almost 2,000 people for up to 10 years - providing a powerful set of results. They found the risk was 76% lower for those who drank juice more than three times a week, compared to those who drank it less than once a week.
美國研究人員在十年間追蹤近兩千人，提出有力的結果。他們發現每周喝果汁三次以上的人，比每周喝不到一次的人失智的風險降低百分之七十六。

The study appears in the American Journal of Medicine.
這項研究刊登於美國醫學期刊上。 Alzheimer's is linked to the accumulation of

clumps of beta -amyloid protein in the brain.
阿滋海默症和乙型澱粉樣蛋白形成斑塊在腦中堆積有關。
 
There is some evidence to suggest that this process may be controlled by the chemical hydrogen peroxide.
有些證據顯示，這個過程可以由化學品過氧化氫加以控制。

Various studies have suggested that polyphenols - chemicals available in many foods - might disrupt these processes and provide some protection against Alzheimer's disease by neutralising the effect of damaging compounds called free radicals.
不同的研究顯示，多元酚類這種化學成分存在很多食品中，可以阻斷這個過程，並以化解自由基這種有害化合物的效果防範失智症。

Fruit and vegetable juices are particularly rich in polyphenols.
果菜汁中富含多元酚類。