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(开封模拟)体裁 说明文 话题 健康 词数 277 Overweight has been a great concern for many people. In an attempt to keep normal weight, people have 1 tried various methods. Nevertheless, not all the ways are 2 when it comes to health. For weight loss, many people 3 the high-protein, low-carbohydrate(碳水化合物)diets. However, such diets might have 4 long-term effects on the colon(结肠). The diets can also create certain 5 in the colon that could lead to colon cancer risk. At least it can raise the 6 of the risk. The research has 7 that the diets can help heavy people lose weight so people would not lose the 8 of keeping normal weight. 9 , any weight-loss plan must include enough amounts of high protein that might have ill effects on the 10 . The findings are based on seventeen overweight men who 11 three short-term different diets. The result of the study proved that they had 12 levels of some substances that have been 13 cancer when the men were 14 on the high-protein diet. When they were on the high-protein, low-carbohydrate diet, they had lowered amounts of fiber-originated 15 thought to be protective against 16 . Exactly what those changes might mean for a person’s health is 17 . But the findings suggest that people should be aware of 18 much protein and some fiber over a long period. 19 , experts recommend that adults get about 28 grams of fiber per day—though it’s not known whether that’s enough for someone on a high-protein weight-loss 20 . | 
