肥胖导致老年痴呆(2)【沪江慢速VOA080416】
肥胖能引起高血压、糖尿病和心脏病发作。不过现在也许有另外的理由来减肥了,特别是身体的中间部分。最近的一项研究发现，人们40岁的时候如果有腹部脂肪,到了晚年患痴呆的风险会增加……
【生词摘录】
substance n.物质, 实质, 主旨cell n.单元, 细胞, 蜂房, (尤指监狱或寺院的)单人房间, 电池demonstrate vt.示范, 证明, 论证apparent adj.显然的, 外观上的division n.分开, 除法, 公司, (军事)师, 分界线adulthood n.成人期
【生词摘录】
substance n.物质, 实质, 主旨cell n.单元, 细胞, 蜂房, (尤指监狱或寺院的)单人房间, 电池demonstrate vt.示范, 证明, 论证apparent adj.显然的, 外观上的division n.分开, 除法, 公司, (军事)师, 分界线adulthood n.成人期
Study Links Midlife Belly Fat to Higher Risk of Dementia (2/2)
Those with the highest belly measurements had almost three times the risk of dementia compared to those with the lowest. Belly size appeared to make a difference even in patients with normal body weight.Belly size is linked to a kind of fat that grows around organs and produces harmful substances. Experts believe that belly fat is more dangerous than other kinds of fat cells that grow just under the skin.
The researchers say this is the first study to demonstrate a link between midlife belly fat and the risk of dementia. Still, it is possible that this apparent connection could be the result of a complex set of health-related behaviors.
The findings appeared in the journal Neurology. Rachel Whitmer from the Kaiser Permanente research division led the study. She says the findings do not explain why belly fat may be linked to dementia. But she says the study should send a warning.
Other research has shown that brain changes linked to Alzheimer's disease might begin as early as young adulthood. And another study showed that belly fat in old people was tied to increased loss of brain cells.
参考译文：
腹部测量值最高组大约比腹部测量值最低组患痴呆的风险高3倍。即使在正常体型的人群中，似乎腹部大小也会使结果不同。腹部大小与生长在器官周围的一类脂肪相关，并且这种脂肪会产生有害性物质。专家相信腹部脂肪比生长在皮下的其他类脂肪细胞的危险性更高。
研究人员说这是首次通过研究证实中年腹部脂肪与（老年时）痴呆风险相关。然而，这种表面上的联系也可能是一组复杂的健康相关的行为的结果。
研究结果刊登到了《神经学》杂志上。来自凯萨恒健研究部的惠特玛支持本项研究。她说研究结果没有解释为什么腹部脂肪与痴呆相关。但是，她说本研究可以引起人们重视。
其他研究表明，阿尔茨海默病相关的脑部改变可能早在年轻的成人中就开始出现。另一研究证实，老年人腹部脂肪与持续增加的脑细胞死亡相关。
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