評論
打印
Epidemiological studies would be searching
流行病學(xué)研究將會探究維生素D
for the link between vitamin D and cancer
和癌癥發(fā)病率
mortality and/or morbidity.
死亡率之間的關(guān)系
The identification of causal relationships
鑒定這些
between these exposures and outcomes
所產(chǎn)生的后果
is an important aspect of epidemiology.
是流行病學(xué)重要的一部分
Let's take a look at some of the research
讓我們來看看一些已經(jīng)完成的研究
that has been done. The Third National Health
2007年，美國國家癌癥研究院期刊發(fā)表的
and Nutrition Examination Survey published
第三次國家醫(yī)療服務(wù)制度
in 2007 by the Journal of the National Cancer Institute
和營養(yǎng)檢查調(diào)查
is one of very few epidemiological studies on
是為數(shù)不多的關(guān)于維生素D
vitamin D and colon cancer. The researchers looked at
和結(jié)腸癌的流行病學(xué)研究之一
16818 participants and examined blood levels of
研究人員找來了16818名參與者
vitamin D. Individuals with blood levels of
檢查他們血液中維生素D的濃度
80 nanomoles per liter or higher of vitamin D
每升血液有達(dá)到80毫微摩爾維生素D的人
reduced their risk of colon cancer by 72%
與那些含量低于50毫微摩爾的人們相比
compared to individuals with blood levels
直腸癌發(fā)病率降低了72%
below 50 nanomoles per liter.
2003年由癌癥成因控制中心
The American Cancer Society's Cancer
出版的
Prevention Study II Nutrition Cohort published
由美國癌癥協(xié)會發(fā)表的
in 2003 by the Cancer Causes Control showed
癌癥防治研究二-營養(yǎng)人群
a slightly lower risk of colorectal cancer in men, but
發(fā)現(xiàn)男性的患結(jié)腸癌的風(fēng)險會變小一些
the women in the study did not show the same effect.
但是女性在這一研究中沒有得到同樣的結(jié)論
This group of researcherse studied a group
研究人員的研究對象是男性和女性
of 120,000 men and women and analyzed their diet,
共120000人，研究內(nèi)容是他們的膳食
medical history and lifestyle. This study found that
病史和生活方式
men with intakes of 520 IU or higher of vitamin D
研究發(fā)現(xiàn)，男人通過膳食和膳食補充劑
through their combined diet and supplementation
攝入大于或等于520IU的維生素D之后
had a slightly lower risk of colon cancer.
結(jié)腸癌發(fā)病率會降低一點
In the same study of the American Cancer Society
在同樣的研究中，即美國癌癥協(xié)會進(jìn)行的
on Cancer Prevention Study II Nutrition Cohort
癌癥防治研究二-營養(yǎng)人群
researchers also singled out post-menopausal women
研究人員挑選出絕經(jīng)的
who had no family history of breast cancer.
沒有乳腺癌病史的女性
These 68,567 women were then given a questionnaire
68567位女性填寫了一份關(guān)于膳食攝入量
on dietary intake, medical history and supplement use.
病史，補充劑使用的調(diào)查問卷
Researchers looked specifically at calcium,
研究者著重研究她們膳食中
vitamin D and dairy consumption in their diets.
鈣，維生素D以及乳制品
The study concluded that women who consume
研究得出結(jié)論
higher amounts of calcium and vitamin D from
從乳制品來源中攝入更多鈣，維生素D的女性
dairy sources decreased their risk of breast cancer.
乳腺癌發(fā)病率會相對降低
Take a moment to answer this question. True or false,
請回答這個問題，下面這句話是對是錯
vitamin D is not necessary for calcium to be
維生素D在人體吸收鈣質(zhì)方面不是必需的
absorbed in the body? The answer is false.
這是錯誤的
Vitamin D is necessary for calcium to be
維生素D在人體吸收鈣質(zhì)方面是必需的
absorbed by the body as it aids in absorption
就像它幫助小腸吸收鈣質(zhì)
of calcium from the small intestine and it also
以及幫助維持
helps maintain blood calcium levels.
血液鈣濃度
