首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We’re always being told by the Department of Health to eat five portions of fruit and vegetables a day. But it’s not clear where
We’re always being told by the Department of Health to eat five portions of fruit and vegetables a day. But it’s not clear where
admin
2013-09-23
79
问题
We’re always being told by the Department of Health to eat five portions of fruit and vegetables a day. But it’s not clear where the evidence for this comes from and a large study by the European Prospective Investigation Into Cancer and Nutrition(Epic)two years ago of the dietary intake of more than 400, 000 people found only a weak link between eating fruit and vegetables and a reduction in overall cancer risk. There’s no evidence it reduces breast or prostate cancer.
Even so, how could anyone argue against eating more fruit and vegetables? Well, it depends what fruit you’re eating. A review article in the Canadian Medical Association Journal warns that a chemical in grapefruits can interact fatally with certain medicines. Even apple juice, the staple of many breakfast tables, may reduce our absorption of some drugs. Parents also often think fruit juice is a healthy alternative to soda drinks but juices contain sugar and calories too—as much as a glass of Coke(160 calories)—so should be drunk in moderation.
Grapefruit has also been linked to an increase in breast cancer. A study in the British Journal of Cancer(BJC)of 500, 000 post-menopausal women found that eating a quarter of the fruit a day increased the risk by 30% .
There is one good reason for not eating grapefruits—they taste sour. But they are unlikely to increase your risk of breast cancer; further research in the BJC showed no increase of breast cancer in pre-or post-menopausal women who tuck into grapefruits or drink juice.
Grapefruit contains a type of chemical called furanocoumarin(also found in Seville oranges and limes but not Valencia or other sweet oranges), which, by inhibiting the enzyme CYP3A4, stops the breakdown of some prescription drugs. So the concentrations of these drugs rise and can have serious side-effects, including kidney damage, heart block(where no electrical impulses pass through the heart and it can stop beating), and deep vein thrombosis(which occurred when an oral contraceptive was taken by a woman who also ate grapefruit three days in a row).
Patient information leaflets should tell you what foods to avoid with which drugs. If in doubt, ask your doctor. So you don’t need to eat less fruit, and may still need to eat more. Another paper from the Epic study found a 22% reduction in deaths from heart attacks in people who ate eight portions of fruit and vegetables a day compared to those who ate three or fewer. The way the study is designed, however, means that it can only suggest a link—it can’t prove one.
In parents’ opinion, fruit juice______.
选项
A、should not be drunk with drugs
B、should be healthier than soda drinks
C、may also cause weight gain
D、could be drunk as much as the child like
答案
B
解析
推理题。文章第二段最后一句表明父母们也经常认为果汁是汽水的健康替代品,由此推出父母认为果汁比汽水更健康,所以[B]正确。本段第三句提到西柚中的一种化学物质可以和某些药物发生致命的相互作用,第四句也指出果汁可能减少我们对某些药物的吸收,但并未表明父母认为果汁“不应该和药物一起喝”,故排除[A];该段最后一句提到果汁也含有糖和卡路里,但父母并未意识到这一点,所以排除[C]“可能导致体重增加”;文中只提到父母认为果汁可以作为汽水的替代品,但并未提及父母认为可以随便喝,因此排除[D]“可以让小孩随意喝”。
转载请注明原文地址:https://kaotiyun.com/show/3HLK777K
0
专业英语四级
相关试题推荐
RhodeIslandwasthe【C1】______ofAmericantennis:whentheUnitedStatesNationalChampionships(nowtheUnitedStatesOpen)w
RhodeIslandwasthe【C1】______ofAmericantennis:whentheUnitedStatesNationalChampionships(nowtheUnitedStatesOpen)w
Acommonassumptionabouttheprivatesectorofeducationisthatitcatersonlytotheelite.【C1】______recentresearchpoints
Acommonassumptionabouttheprivatesectorofeducationisthatitcatersonlytotheelite.【C1】______recentresearchpoints
Theteachernotifiedusthattheexaminationwouldbeheldin______.
Weoftenadvisehimnottodrinkmorewinethan______forhishealth.
HealthMinisterNicolaRoxon’slatestproposalthatpatientsbeallocatedtodoctorsonalistbasisisstraightoutoftheplay
Cancerissecondonly______heartdiseaseasacauseofdeath.
Canyoufindsome______explanationforhisillnesssinceheseemstohavenoobviousdisease?
Hisignorancewasasremarkableashisknowledge.Ofcontemporaryliterature,philosophyandpoliticsheappearedtoknownext
随机试题
广告费用的承担者是__________。
A.热汗不止B.睡时汗出C.冷汗淋漓D.动则汗出盗汗是指
患者,女性,45岁。做农活回来后意识不清,并发生抽搐。送急诊。查体:呼吸困难,发绀、大小便失禁、瞳孔缩小,血压85/60mmHg,双肺布满湿啰音。心率133次/min。抢救治疗措施应选
对明确支气管扩张咯血患者出血部位,最有价值的检查是
可以由当事人协商解决的是( )由国家行政管理机关依法追究的是( )
将利息的时间因素考虑进去的利率是()。
甲公司2×21年度财务报告批准报出日为2×22年3月30日,该公司2×22年1月1日至3月30日之前发生的下列事项,属于调整事项的有()。
非同一系统的任何机关相互行文都使用()
很多医学专家提出过量饮用咖啡对健康有害。为验证过量饮用咖啡对心脏的影响,研究人员选取了两组被试者。第一组被试者每天饮用5杯或5杯以上咖啡,第二组被试者从不饮用咖啡。一段时间后发现,第一组被试者中患心脏病的比例明显高于第二组被试者。因此,研究人员得出结论,过
Vallone,aprofessorofchildhoodstudiesatRutgersUniversity,combinesreadingsofchildren’sliteraturewithsocialhistory
最新回复
(
0
)