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Calories or fat grams--论文代写范文精选

2015-09-28 来源: 51due教员组 类别: 更多范文

51due论文代写网精选代写范文:“Calories or fat grams ” 卡路里的标准单位是测量能量释放的营养,如脂肪、蛋白质和碳水化合物。脂肪是一个重要的养分,帮助身体传输和吸收脂溶性维生素。而蛋白质和碳水化合物只有四个卡路里的能量,脂肪有九个。建议脂肪占日常饮食的不超过30%。虽然两个卡路里和脂肪克很重要,但最好是专注于摄入的总量,这常常似乎被遗忘。小论文是关于卡路里的定义解释

A calorie is the standard unit for measuring energy released from energy-yielding nutrients, such as fat, protein, and carbohydrate. Fat is an essential nutrient that helps the body transport and absorb fat-soluble vitamins (e.g., A, D, E, and K), among other functions. Whereas proteins and carbohydrates have only four calories of energy per gram, fat has nine. Food labels are federally standardized to help make it easier for the consumer to know what's in a particular food. You can calculate the percentage of calories from fat by looking at the column marked "Percent Daily Value" for total fat and simply add up these percentages. It's recommended that fat make up no more than 30 percent of your daily diet (meaning less than or equal to 30 percent of total calories a day from fat).

Although it is important to watch both calories and fat grams, it's best to focus on  the total number of calories consumed, which often seems to be forgotten. With the introduction of low-fat and fat-free versions of many common foods, you'd expect people to lose weight. Instead, many are either staying at the same weight or even gaining weight. Sometimes you can eat more of these foods than their full-fat versions for the same number of calories. However, sometimes low-fat foods contain more sugar than their full-fat cousins, and hence as many calories per serving. Ultimately, if you eat more calories than your body expends, regardless of whether these calories come from fat, protein, or carbohydrates, you will gain weight. Unused energy is converted and stored as excess body fat.

The amount of calories a person needs is based on body weight, age, gender and physical activity level. Generally, 1200 to 1400 calories per day is considered low, and anything above 2400 is considered too much. To find out how many calories you should be getting a day, check out the MyPlate website (link is external). This USDA-sponsored site will ask you to input your age, gender, weight, height and physical activity level in order to determine what caloric intake will be right for you. You can also check out Ideal Caloric Intake? in the Go Ask Alice! archives for more information on calorie counting.

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