Given the variety of early-onset dementias , how can specialists determine who has which disease ?
各种早发型痴呆中，专家们如何能确定病人患的是哪一种呢？
And if enhanced , the substance could help ward off dementias and other memory problems .
如果加大剂量可以帮助防止痴呆和其他记忆问题。
By 2050 more than 100 million people worldwide will have alzheimer 's disease or other dementias , scientists estimate , and far more will struggle with age-related memory decline .
A panel convened by the national institutes of health in july cautioned , however , that there isn 't enough evidence to conclude that such activities prevent alzheimer 's disease or related dementias .
People who are obese in middle age are at almost four times greater risk of developing dementias such as alzheimer 's disease in later life than people of normal weight , according to a study released today .
