The United States conducted a three-year follow-up survey of 700 centenarians, and the Chengdu Committee on Aging in Sichuan also conducted a survey of 720 centenarians in this city in order to find out the secret of their longevity. Coincidentally, their final result is that these centenarians have a * * * nature, that is, these centenarians are optimistic! As the saying goes, contentment is always happy and open-minded. Does this mean that optimism can live longer? Of course not, because whether a person can live a long life has a lot to do with his physical function and physique, as well as his living environment and available medical conditions. Comprehensive factors in all aspects can make people live longer. Optimism can only reduce people's mental stress, make people carefree and healthier, and may not necessarily make people really live longer. Optimism combined with good health can achieve longevity.

Optimism is an important factor in longevity. In fact, it is not surprising that experts can come to this conclusion, because the research results over the years are like this. Old people who find longevity are optimistic and can see everything in life. They have no mental burden and mental burden, and it is easier to live longer if they are in good health. An optimistic attitude is very important for a person to live a long life, because if he is open-minded and takes everything lightly, it is easy to keep a happy mood all the time. If he is in a good mood, all aspects of his body will develop in a good state, which can promote his health, recover from illness and enhance his immunity. This is an important factor in a person's longevity. But optimism can't play a decisive role, because longevity also requires a person to have a good physique. If you are in poor health, no matter how optimistic you are, you will not live to 100 years old.

Inheritance of longevity gene There is another phenomenon in real life, that is, many families have longevity gene inheritance. If the older generation of the family has a long-lived old man, then the younger generation of this family is likely to have another long-lived old man. This is the inheritance of longevity gene. They may have inherited some factors that make the body better in their body genes, so that the descendants of this family can live longer. This can be found in society. Many grandparents can live to be over 90 years old. By their parents' generation, there are always several brothers and sisters who can live to be over 90 years old.

Living environment, health care and medical conditions In addition, the better a person's living environment and working conditions are, the better his body may be maintained, and it is easier for him to live a long and healthy life. If this person usually knows how to keep in good health, rarely eats food harmful to human body such as barbecue, frying, spicy stimulation, and is not very interested in smoking and drinking, then he will also add weight to his longevity and health; Being able to enjoy good medical conditions is also one of the factors of longevity. You see, those rich people are cared for by private doctors, and they can basically live to be over 90 years old. There are also some leaders who are taken good care of and basically live a long life.