After a lot of investigation and careful study, American life insurance companies believe that the following people can live long:
(1) has a long-lived predecessor. If my parents, grandparents and grandparents have lived for 475 years, I have the possibility of longevity.
(2) I have a good temper. Not sad, not easily excited, open-minded, no matter what difficulties and misfortunes you encounter, you can take your time and be optimistic. Such people tend to live a long life.
(3) No tobacco and alcohol hobbies. Not smoking or drinking can reduce the loss of body organs and avoid accidental casualties caused by alcoholism. People who have good habits at ordinary times can live longer.
(4) No major surgery. People who live over 90 years old rarely have surgery before they get old, and only a few people have had minor surgery. In other words, people who have not suffered from serious surgical diseases or major physical injuries may live a long life.