Scientists at Erasmus University in Rotterdam, the Netherlands, conducted a six-year study of 5,395 people aged 55 and over who did not have signs of dementia.

• 荷兰鹿特丹Erasmus大学的科学家对5395位55岁以上的人进行了6年的追踪研究，当时，他们没有患痴呆病的症状。