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Sugar Induced Obesity more than Fat and Starch under the same Calorie Intake in Rats


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  • 一定のカロリーを摂取する場合,砂糖は脂肪やでんぷんよりも肥満を誘導し易い

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We investigated the effect of low-carbohydrate diets and high-sugar diets on body weight and biological value of blood and liver in rats. Especially, we compared the three different experimental diets: control diet with n-6 or n-3 fatty acids, low-carbohydrate diet with high fat and high protein, high-sugar diet instead of starch under the same calorie intakes. Furthermore, each diet group had with or without cholesterol. The result showed that the high-sugar diet increased body weight much heavier than other groups. The low-carbohydrate diet showed the body weight as same as control group under the limited calorie intakes. The high-sugar diet needed the lowest food to increase 1g of body weight than the low-carbohydrate diet and control diet. In addition, the high-sugar diet was not affected by stress on food intake compared with low-carbohydrate diet. That was extremely different from low-carbohydrate diet and control diet which required more food to increase 1g body weight under the stress. The biological values of blood were not changed among each group. However, the diets which including cholesterol increased total cholesterol in liver and blood, and increased triacylglycerol in liver. In contrast, HDL - cholesterol were decreased with cholesterol diets. The conclusion of this study is that excessive sugar intakes showed inducing obesity more than low-carbohydrate diet. In addition,this study suggests that excessive sugar or fat intakes from animal source should be cautious to prevent liver damage.



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