A person gains weight when he/she consumes too many calories than he/she expends.
The energy balance of a person determines how much body weight the person has.
Energy balance is defined as the state achieved when the amount energy intake equals the amount of energy expenditure.
- When a person has positive energy balance, energy intake exceeds expenditure and this causes weight gain.
- When a person has negative energy balance, energy expenditure exceeds intake, the resulting weight loss.
The energy released when the body digests and absorbs food is measured using a unit of energy called Calories.
All food classes such as carbohydrates, fats and proteins are sources of energy or calories when they are broken down.
Therefore, a person gains weight when he/she consumes too many calories than he/she expends irrespective of the food class providing the energy.
Learn more about energy and calories at: https://brainly.com/question/3193420
