Jeffrey Salazar
Calories are a measure of energy and are essential to our diets as they provide our bodies with the energy they need to function. This energy is used for movement, thought, growth, and other bodily functions. The number of calories we need each day depends on our age, gender, and physical activity habits. Calories are obtained from macronutrients, including carbohydrates, protein, and fat. These macronutrients provide different amounts of calories per gram, with fat providing the most at 9 calories per gram. Calories are important for weight control, as consuming more calories than our bodies need can lead to weight gain.
| Characteristics | Values |
|---|---|
| What are calories? | A measure of energy |
| Why do we need them? | Our body breaks down food molecules and uses the stored energy for many different functions, including movement, thought, growth, and weight control |
| How many do we need? | This depends on age, gender, and physical activity habits |
| What foods contain calories? | Macronutrients, including carbohydrates, protein, and fat |
| How much energy do these macronutrients provide? | 1 g of carbohydrate or protein provides 4 calories, 1 g of fat provides 9 calories |
| What percentage of our daily calories should come from these macronutrients? | 45-60% from carbohydrates, 10-35% from protein, 20-35% from fat |
| How can we meet our calorie needs? | With a nutritious, well-balanced diet that includes plenty of vegetables, fruits, whole-grain foods, and healthy sources of protein and fat |
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What You'll Learn
Calories are a measure of energy
The number of calories a person needs each day depends on their age, gender, and physical activity habits. For example, a 31 to 35-year-old man who is moderately active needs about 2,600 calories daily, while a woman of similar age and activity level needs about 2,000. Approximately 45 to 60 percent of daily calories should come from carbohydrates, 10 to 35 percent from protein, and 20 to 35 percent from fat.
Calories play a role in weight control as well. Eating more calories than the body needs can lead to weight gain. The body stores excess energy when the number of calories consumed exceeds its immediate needs. It is important to meet calorie needs with a nutritious, well-balanced diet that includes plenty of vegetables, fruits, whole grains, and healthy sources of protein and fat.
Calories are essential for the body to function properly. They provide the energy needed for various bodily processes, and the right amount of calories can help maintain a healthy weight. By understanding the role of calories and how they relate to energy, people can make informed choices about their diet and ensure they are getting the necessary nutrients.
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Calories are needed for bodily functions
The number of calories your body needs each day is influenced by your age, gender and physical activity habits. For example, a man aged 31 to 35 who's moderately active needs about 2,600 calories daily, while a woman of similar age and activity needs about 2,000. Your body gets its calories from macronutrients, which are the nutrients your body needs in large amounts, including carbohydrates, protein and fat. One gram of carbohydrate provides your body with four calories, as does one gram of protein, but one gram of fat provides your body with nine calories. Approximately 45 to 60 per cent of your daily calories should come from carbohydrates, 10 to 35 per cent should come from protein, and 20 to 35 per cent should come from fat.
Calories also play a role in weight control, because eating more calories than your body needs can lead to weight gain. When the supply of energy (the number of calories consumed in foods) exceeds the body's immediate needs, the body stores the excess energy. Foods may not be completely absorbed. In such cases, the body may not be able to use all of the calories in foods as energy.
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Calories are needed for weight control
Calories are a measure of energy and are needed in our diet to provide the body with energy to function. Calories are needed for weight control because eating more calories than your body needs can lead to weight gain. The body stores excess energy when the number of calories consumed exceeds the body's immediate needs. Metabolism refers to the process by which the body converts calories from food into energy. The number of calories your body needs each day is influenced by your age, gender, and physical activity habits. For example, a 31-35-year-old man who is moderately active needs about 2,600 calories daily, while a woman of similar age and activity level needs about 2,000. A nutritious, well-balanced diet that includes plenty of vegetables, fruits, whole grains, and healthy sources of protein and fat can help meet your calorie needs and keep your body healthy.
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Calories are needed for growth and development
Calories are a measure of energy and are needed for growth and development. They are commonly used to describe the energy content of foods. Your body breaks down food molecules and uses the stored energy for many different functions, including movement, thought and growth. Calories also play a role in weight control, because eating more calories than your body needs can lead to weight gain. Metabolism refers to the process by which your body converts calories from food into energy it can use. Your body needs energy even while you are at rest for breathing, circulating blood, repairing cells and all other bodily functions.
The number of calories your body needs each day is influenced by your age, gender and physical activity habits. For example, a man aged 31 to 35 who's moderately active needs about 2,600 calories daily, while a woman of similar age and activity needs about 2,000. Your body gets its calories from macronutrients, which are the nutrients your body needs in large amounts, including carbohydrates, protein and fat. One gram of carbohydrate provides your body with four calories, as does one gram of protein, but one gram of fat provides your body with nine calories. Approximately 45 to 60 per cent of your daily calories should come from carbohydrates, 10 to 35 per cent from protein, and 20 to 35 per cent from fat.
Meeting your calorie needs with a nutritious, well-balanced diet can help keep your body healthy. The Harvard School of Public Health recommends a diet that includes plenty of vegetables, fruits, whole-grain foods and healthy sources of protein and fat. It also recommends skipping sugar-sweetened drinks that add calories to your diet without adding beneficial nutrients.
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Calories are needed for metabolism
Calories are a measure of energy, and they are needed for metabolism. Metabolism is the process by which the body converts calories from food into energy. This energy is used to power bodily functions, including movement, thought, growth, and repair. The number of calories your body needs each day is influenced by your age, gender, and physical activity habits. For example, a moderately active 31-35-year-old man needs about 2,600 calories daily, while a woman of similar age and activity level needs about 2,000. Calories are obtained from macronutrients, including carbohydrates, protein, and fat. Carbohydrates and protein provide 4 calories per gram, while fat provides 9 calories per gram. A healthy diet that includes plenty of vegetables, fruits, whole grains, and healthy sources of protein and fat is recommended to meet calorie needs.
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Frequently asked questions
Calories are a measure of energy and are commonly used to describe the energy content of foods. Your body is able to break down food molecules and use the stored energy for many different functions, including movement, thought and growth.
The number of calories you need depends on your age, gender and physical activity habits. For example, a man aged 31 to 35 who's moderately active needs about 2,600 calories daily, while a woman of similar age and activity needs about 2,000.
Your body gets its calories from macronutrients, which are the nutrients your body needs in large amounts, including carbohydrates, protein and fat. Approximately 45 to 60 percent of your daily calories should come from carbohydrates; 10 to 35 percent should come from protein; and 20 to 35 percent should come from fat.
