视频文本

Research has shown that there is little blood absorption of Stevia in rats and humans.
研究表明，水雷和人体的血液都很难吸收甜菊糖甙
Both organisms metabolize the chemical in the same way.
人体和小鼠的生理机制是以同种方式对化学物质进行代谢的
The joint FAO, WHO expert committee on food additives concluded
世界卫生组织添加剂食品专家委员会
that Reb A the main sweetening agent from Stevia has no evidence of an ability to damage or mutate DNA.
认为并无证据表明从甜菊糖甙中提取出的主要甜味剂瑞鲍迪甙A会损害或改变DNA
Which is usually how cancer begins.
而DNA的改变也正是癌症产生的原因
This claim is based on research conducted in subcultures and living organisms.
这一论断是在传代培养和生命机体实验的基础上完成的
Research on mice and rats have shown
针对小鼠进行的研究表明
no DNA strain breakage or chromosome damage at doses up to 2000 milligrams per kilogram body weight per day.
每天每公斤体重摄入量为2000毫克并不会对DNA和染色体造成损害
For a 150 pound person this would be equivalent to a 136 grams
而对于一个150磅重的人来说
which if you think about it in terms of weight is equivalent to two fifths of a box of cheerios.
这意味着136克在重量上来说等于2/5盒樱桃
In research focused on looking at the relationship between Reb A and cancer,
在针对瑞鲍迪甙A和癌症之间关系的研究中，
most of the research on any Stevia compound has been done at the level of the cell and DNA damage.
大部分关于甜菊糖甙化合物的研究内容都对细胞和DNA有损害
Typically cancer is started by damage or mutations to DNA.
通常情况下，癌症是由DNA损害或变异造成的，
The first study review looked at 8 groups of hamster cells
第一项研究报告观察了8组仓鼠细胞，
exposed to Reb A for 4 and 24 hours of varying concentrations.
它们分别以不同强度接触瑞鲍迪甙A从4-24小时不等
None of the groups showed significant reduction of DNA allegiance or breakage.
所有研究组都没有显示出严重的DNA粘连或断裂
Researchers concluded that Reb A is non mutagenic
由此研究专家认为，瑞鲍迪甙A不会造成突变，
or does not cause damage to DNA and does not increase the risk of cancer.
或不会对DNA造成伤害也不会增加患癌几率，
The second study injected mice with Reb A.
第二项研究向鼠体内注射了瑞鲍迪甙A
there were four different levels of Reb A doses exposed at two different lengths of time.
注射量分为四个等级，持续时间的长短也分为两组
Blood samples were taken as the mice were observed.
在观察过程中提取了小鼠的血样
There was no significant increase in altered immature
在所有研究小组的样本中
blood cells in the high dose group or any other treatment group.
未成熟的血细胞都未显示出明显的
The types of alterations to the blood cells included polychromatic
改变，血细胞发生的改变包括多色或者颜色的改变，
or changing colour and micronucleated or small nucleus.
小核以及小细胞分子的变化
Both poli chromatic and micro nucleiatic conditions are considered evidence of DNA damage and the increased risk of cancer.
多色改变和小核状况的改变都被看做是DNA损伤和癌症风险增加的证据，
Therefore researchers conclude that Reb A did not appear to increase the risk of cancer.
因此研究人员认为瑞鲍迪甙A似乎并不会增加患癌的风险

视频及简介

视频简介：

本课程的目标是，向公众提供最新的有关营养方面的信息和话题，内容涵盖饮食因素对于癌症的影响作用，健康的饮食习惯，学校能提供的营养有哪些，咖啡因与癌症的联系，水果蔬菜与癌症预防等。通过本课程的学习，人们可以学习到健康的生活饮食习惯，在每天的饮食中防癌症于未然。