解放军文职招聘考试Colds and Age

 Colds and Age

A critical factor that  plays a part  in susceptibility to colds is age. A

study done by the University of Michigan School of Public Health revealed

particulars that seem to hold true for the general population. Infants  are

the most cold     ridden  group, averaging more than six colds in their first

years. Boys have more colds than girls up to age three. After the age of

three, girls are more susceptible than boys, and teenage girls average

three colds a year to boys' two. The general incidence of colds continues

to decline into maturity. Elderly people who are in good health have as few

as  one or  two colds annually. One exception  is found among  people  in 

their twenties, especially women, who show a rise in cold infections,

because people in this age group are most likely to have young children.

Adults who  delay having children until their  thirties and forties

experience the same sudden increase in cold infections. The study also

found that economics plays an important role. As income increases, the

frequency at which colds are reported in the family decreases. Families

with the lowest income suffer about a third more colds than families at the

upper end. Lower income  generally forces people to live  in more cramped

quarters than those typically occupied by wealthier people, and crowding

increases the opportunities for the cold virus to  travel from person  to

person. Low income  may also adversely  influence diet. The  degree to

which poor nutrition affects susceptibility to colds is not yet clearly

established, but an inadequate diet is suspected of lowering resistance

generally.

感冒与年龄

年龄是人们是否易患感冒的一个重要因素。  密歇根大学公共卫生学院揭示了一些对人 们普遍适用的细节。

婴儿期是最易感冒的时期，从出生到一周岁平均感冒六次。 在三周岁 前，男孩比女孩感冒次数要多。  但三周岁后，女孩就更易感冒了。  十几岁的女孩年平均感

冒三次，男孩则为两次。  一般说来，随着年龄的增长，感冒的次数也越来越少。  健康的老 年人每年只感冒一至两次或更少。

但在二十至三十岁之间的人尤其是妇女出现了例外。 他 们感冒的次数有所增加，其原因在于人们通常在这一时期带养小孩。  那些晚育至三十几岁

或四十几岁才有孩子的人，在那一时期感冒次数也会突然增加。  研究还发现，经济状况与 感冒息息相关。 随着收入的增加，家庭成员的感冒次数呈下降趋势。

家境贫寒的人感冒次 数要比最富裕的人多三分之一。 低收入者被迫挤住在比富人居所狭小得多的空间里。 拥挤 的状况为感冒病菌的传播提供了条件。

低收入同样不利于合理的饮食结构。 营养不良到底 对患感冒造成多大的影响目前尚不清楚，但不合理的饮食通常降低了人体的抵抗力。