Is lifespan genetic? The answer is yes! For example, if some diseases are hereditary, the life span will be relatively low. If there are no genetic diseases, the life span will be relatively high. "Hereditary characteristics determine a person's lifespan." This is the famous saying of the famous geneticist Morgan.

Lifespan is closely related to heredity. The internationally accepted standard for longevity is 80 years old. As early as the beginning of the last century, scientists discovered that half of the descendants of a family who are over 80 years old have their parents. The above also reached 80 years old, thus confirming that human lifespan is related to genetics.

American Bohr investigated a centenarian and found that his six direct ancestors all had an average life span of close to a hundred years.

Therefore, some people have proposed that a person's life span can be predicted by the average life span of six people: parents, grandparents and maternal grandparents. A large number of surveys and studies have confirmed that this rule has certain reference value.

Professor Li Tiejun of Nanjing University of Traditional Chinese Medicine and others conducted a one-year survey of 100 long-lived elderly people in Nanjing (the oldest is 107 years old, the youngest is 93 years old, and 42 people are over 100 years old). It shows that longevity The average lifespan of the elderly father is 62.4 years, and the average lifespan of the mother is 69.8 years. Before the founding of New China, the average life expectancy in my country was only about 35 years. The lifespan of the parents of these birthdays was almost twice the average life expectancy at that time. Therefore, it can be said that genetic genes are an important factor in determining life span.

Generally, around the age of 85, the functions of the body’s organs are fully aging. At this time, even if they do not suffer from fatal diseases, they still face the threat of death from old age. However, centenarians age much slower than ordinary people. . Ni Peiying, an old man from Jiangning who lived to be 107 years old, could still go to the mountains to chop firewood when he was 90 years old, and he could still do some light work when he was 100 years old. According to a statistical analysis of 116 centenarians in Shanghai in 1999, it was found that more than 40% of their families had genetic factors for longevity. Summary:

Hereditary genes are contained in chromosomes. Research on the chromosomes of long-lived elderly people has proven that the chromosome aberration rate of long-lived elderly people is lower than that of ordinary elderly people, and the proportion of sex chromosome loss is also lower.