Calories are units of energy that our bodies use to function properly. They are essential for:
- Maintaining basic bodily functions
- Providing energy for physical activity
- Supporting healthy growth and development in children
- Without sufficient calories, our bodies would not be able to carry out these essential functions, leading to fatigue, muscle weakness, and other health problems.
According to the quantity of the nutrient, food can have more or fewer calories. Calories are defined by:
- Proteins, carbohydrates, and fats: They are the main elements that define the calories of a food: The more food has proteins, carbohydrates and fats, higher is the amount of calories.
- Water reduces calories of the food: More water, fewer calories.
- Alcohol increases calories of the food: More alcohol, more calories.
The quantity of calories we need, depends on our own needs. Here some facts about different kind of diets:
- Zero carbohydrate diet: Mostly high protein. Maybe poor in fiber and vitamin C, and rich in fat and cholesterol, and then high calories.
- Low carbohydrate diet: Vegetables and Vegetable Products and Fruits and Fruit Juices are low carbohydrate categories. They are: High water and vitamin C, moderate fiber, low protein and carbohydrate, zero fat and cholesterol, and then, low calories.
- High protein diet: Mostly foods of animal origin. Slightly high in calories. Maybe poor in fiber, vitamin C, carbohydrate and even water; and rich in fat, cholesterol and then calories.
- Zero or low protein diet: Include high fat foods (high fat and cholesterol, low or not fiber, vitamin C and water, then high calories). High carbohydrate foods (high fiber, moderate vitamin C, low protein and water, then slightly high calories).
- Low calories diet: In general, low in protein, carbohydrate and fat. High in fiber, water and vitamin C. But these can change according to food.
A good diet maybe: A low carbohydrate diet, including mostly Vegetables and Vegetable Products, adding some high protein foods. A such diet could have all the nutrients and a moderate quantity of calories.
Note: It is an exercice/competition from DataCamp.