which one of the above provide the most energy
Answers
Answer:
Technically, a calorie is defined as the amount of heat necessary to raise the temperature of one gram of water by one degree centigrade. But in layperson's terms, the calorie is a unit of how much energy your food gives you – and if you eat more energy than your body uses, your body stores the excess as fat. So it's just a bit ironic that of the three macronutrients (fat, protein and carbohydrate), it's fat that gives the most energy – or calories – per gram.
Calories per Gram
Calories per GramFat provides the most energy of all the macronutrients, at a whopping 9 calories per gram. That's why even a small amount of food or condiments that are rich in fat can pack so many calories. For example, a single tablespoon of creamy peanut butter has a whopping 191 calories, more than 75 percent of which come from its 16.44 grams of fat. Carbohydrates and protein each pack just 4 calories per gram, less than half the energy in a gram of fat.
The Role of Fats
The Role of FatsEach macronutrient has its place in a healthy diet, and the fact that fat contains more calories than carbohydrates and protein doesn't make it inherently bad. In fact, Dietary Guidelines for Americans 2015-2020 recommends that 25 to 35 percent of the calories in your diet should be made up of fats. The trick is to make sure you consume healthy unsaturated fats, like those you get in nuts, avocados and fish. Less than 10 percent of your daily calories should come from saturated fats, which you'll find in many meats and fast food. As much as possible, limit or exclude trans fat, which makes foods shelf-stable but has a serious impact on your health.
The Role of Carbohydrates
Role of CarbohydratesCarbohydrates are the first and quickest form of energy that your body turns to when it needs fuel. Because of this, simple or fast-acting carbohydrates from foods like candy, baked goods and juices can cause a spike and then a crash in blood sugar and energy levels. Complex carbohydrates, which include whole grains and legumes, raise your blood sugar levels more slowly, give you more sustained energy and even help you feel full longer. According to the Dietary Guidelines for Americans, 45 to 65 percent of your daily calories should come from carbohydrates