单选题
Friends May B to Living Longer
Looking for the secret of a long life? Look closely at your friends. New research suggests that having a strong network of friends helps people live longer.
"Older people with better social networks of friends were less likely to
31
over a 10-year follow-up (随访) period than older people with
32
friends networks," Lynne C. Giles of Flinders University in Australia told Reuters Health.
But in what may come as a surprising finding to older people
33
rely on their children and other relatives, having a large network of relatives was not associated with longer life, according
34
Giles and her colleagues.
"Of course, that is not to say that social networks
35
children and other relatives are not important in many other ways," Giles said.
Study after study has shown that elderly people who
36
connected with lots of people tend to live longer lives.
37
, few studies have examined whether different types of relationships—with friends, partners, children and
38
relatives—have different effects on longevity (长寿).
Giles"s team set out to examine the relationship between various types of social networks and
39
in a group of almost 1,500 Australians who were at least 70 years
40
. Volunteers answered
41
about their social networks and then were followed for 10 years.
The researchers took into account several factors that could have influenced how long a person lived,
42
sex, age, health and smoking status.
What the study showed was
43
older people who reported with better social networks of friends were
44
likely to be alive at the end of the study than people with fewer friends.
But relationships with children and other relatives did not have
45
effect on survival in the study.