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To investigate the relationship
为了探究饮用咖啡与
between coffee consumption and colo-rectal cancer
结肠直肠癌之间的关系
a team of researchers from Harvard Medical School
一组来自哈佛医学院的研究人员
compared data from the nurse's health study
对比了护理健康研究和健康专家随访研究中的
which was comprised of women, and the health
相关数据，这俩个研究分别以女士和男士
professionals study which was comprised of men.
作为各自的研究对象
These large data sets allow for a high level of
这些庞大的数据集考虑到了用有高度说服力
statistical power to determine correlations among
的数据统计来确定
dietary factors and disease occurrence.
饮食因素与疾病发生的相关性
The conclusion of the work was that the
这项研究的结果是
consumption of caffeinated coffee, tea with caffeine
饮用含咖啡因的咖啡，茶或仅仅摄入咖啡因
or caffeine intake alone had no effect on risk of
对患结肠或直肠癌的风险没有任何影响
either colon or rectal cancers in either men or women.
这一结果均适用于男士和女士
Of interest the researchers did find that consumption
出于兴趣，这些研究人员确实发现
of 2 or more cups of decaffeinated coffee per day
每天喝两杯或两杯以上不含咖啡因的咖啡
significantly reduced the risk of rectal cancers.
明显降低了患直肠癌的风险
As with all human studies it is not possible to
同所有的人类研究一样
determine what specific components of coffee
要想确定咖啡中哪些特定的成分
may be responsible for these effects.
具备这些作用是不可能的
Many lifestyle factors impact risk of cancer and
很多生活方式的因素影响了患癌症的风险
although the research factors these into
尽管该项研究将这些因素都考虑在他们的
their statistical analysis it is not fully possible to
数据分析中，但不可能完全
eliminate the impact of all these factors.
排除所有这些因素的影响
Coffee, tea and other caffeinated beverages do not
咖啡，茶和其他含咖啡因的饮品
appear to increase the risk of any forms of cancer
好像不会影响患任何类型癌症的风险
and in fact may provide a protective effect on
事实上在某些类型的癌症方面还可能发挥
some forms of cancer. Coffee containing beverages,
一定的保护作用，含咖啡的饮品，咖啡
coffees and teas are widespread in the market place.
和茶广泛遍布于市场中
Children and teens are increasing consuming
更小年纪的儿童和青少年对这类产品的
these products at younger ages. These products may
摄入正在增加，这些饮品中糖的含量可能较高
contain high amounts of sugar and low amounts of the
咖啡和茶中所包含的有益成分
beneficial compounds found in coffee or tea.
的含量却相对较低
It is always wise to read labels carefully and to
仔细阅读标签并重点监督儿童糖
monitor sugar and caffeine consumption
和咖啡因的摄入总是明智的
especially in children. The impact of lifelong exposure
终身饮用的影响还没有被评估
has not been assessed; however caffeine has been
然而咖啡因的饮用
consumed by humans throughout history.
贯穿于人类的历史
Further research will be needed to more fully
进一步的研究需要更充分的了解
understand the many compounds in coffee
咖啡中的各种成分
to identify its role in the cancer process.
以确定其在癌症过程中的作用
Coffee is considered safe for most people but should be
对大多数人来说咖啡是安全的，但是
avoided with any adverse side effects.
如果出现任何不利的副作用应当停止饮用
Moderate consumption of these beverages
适当饮用这类饮品
can be part of a healthy lifestyle.
可以成为健康生活方式的一部分
