改变生活方式可预防老年痴呆

Lifestyle Changes Can Reduce Risk Of Alzheimer's A new, theoretical analysis finds that about half of the risk factors for Alzheimer's disease are potentially changeable, and that reducing them could substantially decrease the number of new cases of disease worldwide, according to a study to be presented Tuesday at the Alzheimer's Association International Conference.

据老年痴呆症协会国际会议（Alzheimer's Association International Conference）发表的一项研究，一项新的理论分析发现，老年痴呆症(Alzheimer’s disease，又称阿兹海默症)的风险因素大约有一半可能是可变的，降低这些风险因素可能大大降低全世界范围内的新发病数量。

The study is the first known analysis that tries to quantify and compare how risk factors are associated with Alzheimer's. It will be published Tuesday on the journal Lancet Neurology's website after the conference presentation.

这项研究是已知的首个试图将风险因素与老年痴呆症的关联加以量化并进行比较的分析。在上述国际会议上演示后，这项研究将在医学杂志《柳叶刀．神经病学》(Lancet Neurology)的网站上发表。

Factors that increase one's risk for Alzheimer's that are considered modifiable include diabetes, high blood pressure, obesity, smoking, sedentary behavior, depression and low educational level, say the authors from the University of California, San Francisco.

来自加州大学旧金山分校(University of California, San Francisco)的研究作者们说，在可增加个体患老年痴呆症风险的因素中，被认为可变的因素包括糖尿病、高血压、肥胖、抽烟、久坐、情绪低落以及受教育水平低。

In the U.S., physical inactivity is the biggest changeable factor, accounting for 21% of the risk for Alzheimer's, followed by depression and smoking. Added together, the factors account for about 50% of the risk.

在美国，缺乏锻炼是最大的可变因素，占老年痴呆症风险的21%，排在其后的是情绪低落和抽烟。这三大因素加在一起占了50%左右的风险。

If these risk factors were decreased by just 10%, about 184,000 Alzheimer's cases in the U.S. and 1.1 million cases world-wide could be prevented, according to the research. A reduction of 25% on all seven risk factors could prevent nearly half a million cases in the U.S. and more than three million world-wide, the analyses showed.

根据这项研究，如果这些风险因素下降区区10%，在美国就会有大约18.4万老年痴呆症患者可以得到预防，全球预防人数为110万。分析显示，如果所有七项风险可下降25%，美国的预防人数就会接近50万，全球范围内超过300万。