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美国国家老龄问题研究所的科学家在研究中发现,老年人在去世前三年,有淋巴细胞明显减少的特殊征兆。 研究人员是在对105名男子进行了长达30年之久追踪调查之后得出这一结论的。这些人在接受调查的最初阶段均身体健康。
In the study, scientists at the National Institute on Aging found that older adults had a marked reduction in lymphocyte count three years before their death. The researchers came to this conclusion after a follow-up survey of 105 men for 30 years. All of these individuals were in good health during the initial stages of the investigation.