Release date: 2016-05-27
It is often said that immunity will decline when you are older. So what changes will happen to the immune system in the human body as we grow older? A large-scale healthy population immune function study completed by Li Taisheng, a hospital physician in Beijing Union Hospital, which has been completed for 10 years, is the first time in the world to map the trend of aging in the human immune system. Related papers were published in the recently published Journal of Aging in the International Rankings of Aging Factors.
According to the “health†standard defined by the World Health Organization, the research team screened out 1068 healthy people aged between 18 and 80, divided into youth (18-44 years old) and middle-aged (45-64 years old). Old age (over 65 years old) in three age groups.
The study found that with age, the total number of T lymphocytes in the three major types of lymphocytes decreased from 1,403 units to 1,198 units, implying a decline in immune function. Although the total number of CD4 cells, known as the Commander-in-Chief of the Commander's Commander of the Immune System, has not changed much, the total number of memory cells under the command of the two major services: the "active duty" memory cells and the "military reserve" pure cells are obvious. Dissipate the situation. Among them, the mean value of pure cells was 271, 249, 226 in the youth group, the middle-age group and the old group, respectively, while the mean value of memory cells was 419, 459, 472 units in the youth group, the middle-age group and the old group, respectively.
Source: China Science and Technology Network - Technology Daily
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