举一反三
- We evaluated the associations between serum omega-3 and omega-6 poly-unsaturated fatty acid levels and colon cancer risk in a study conducted between 1997 and 2002. We included 363 cases of colon cancer and 498 disease-free controls. Serum omega-3 poly-unsaturated fatty acid levels were inversely associated with colon cancer risk. Subjects in the upper 33% of serum omega-3 poly-unsaturated fatty acids had a 33% lower risk of colon cancer as compared with subjects in the lower 33% of serum omega-3 poly-unsaturated fatty acids. In contrast, the risk of colon cancer was increased by omega-6 poly-unsaturated fatty acids by 68%. This is the first study that simultaneously finds an inverse association of serum omega-3 poly-unsaturated fatty acids and a positive association of omega-6 poly-unsaturated fatty acids with colon cancer. The study design is a:
- In the present study, we examined expression of PGE2 subtypes EP1, EP2, EP3, and EP4 in normal colon mucosa and colon cancers, and assessed the _____ of EP3 to colon cancer.
- Dietary intervention might reduce risk to colon cancer, which is not included A: Reduce the amount of fat and red meat in your diet B: Increase your intake of fruits and vegetables C: Take natural vitamins D: Keep on alcohol consumption
- A. None of the evidence on dietary protein and specific health outcomes can be classified as “conclusive”</p></p><p><p>B. The relation between protein intake and cancer mortality and cancer diseases can be classified as “probable”</p></p>
- The striking example in The Journal of the American Medical Association aims to prove ________. A: the five years following surgery is dangerous in that there is much likelihood to have recurrence. B: surgical removal is not reliable because it could not eliminate all cancer cells of colon cancer. C: The Journal of the American Medical Association often reports the latest discovery in science. D: Western diet, in some uncertain way, excites the growth of cancer cells after the surgery.
内容
- 0
According to a new research, soft drinks have been tied ______ increases in risk factors for colon cancer, such as obesity and diabetes, but there had been little direct research on the subject.
- 1
Who gets cancer and why? The study is following the health of over a million people to learn................................
- 2
Daily intake of six kinds of fresh fruits and vegetables can help meet the minimum fiber requirement.
- 3
7. The risk of developing breast cancer in a certain population is 4%. A study investigating hormone replacement therapy finds that the hormone replacement therapy group has a 25% greater chance of getting breast cancer compared to the placebo group. Based on the study's finding, how many additional cases of breast cancer could one expect in a group of 100 women who undergo hormone replacement therapy compared with 100 who do not?
- 4
The study suggested that dietary isoflavones have a small protective effect on the risk of breast cancer but not lignans.（）