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The wonders of vitamin D keep being revealed, and here's a new one - Higher levels of it cut colorectal cancer risk by a third, particularly in women. The research this conclusion is based on is pretty robust, a large ?international study led by Harvard University. 维生素D的神奇作用正不断向世人展示，目前又发现了其新的功效--多吃维生素D可使人们患结肠直肠癌的风险降低三分之一，尤其是对于女性而言。哈佛大学开展的一项大型国际研究为这一研究结论提供了强有力的依据。 About a fifth of Britons are vitamin D deficient and bowel, or colorectal cancer rates are rising globally. Are these two findings related? Vitamin D is hard to find in high concentrations in natural foods, but it can be found in fatty fish such as salmon, cheese, fortified milk and eggs. The vitamin has been found to strengthen resistance to stomach tumours, and it was most protective in women. 大约五分之一的英国人缺乏维生素D，肠癌或结肠直肠癌的全球发病率正不断飙升。这两个发现是否存在相关性？天然食物的维生素D含量不高，但富含脂肪的鱼（如三文鱼）、奶酪、营养强化奶和鸡蛋中却含有高浓度的维生素D。维生素D已被发现能增强人们对胃肿瘤的抵抗力，尤其能保护女性。 | 
