Here are the essential concepts you must grasp in order to answer the question correctly.
Caloric Balance
Caloric balance refers to the relationship between the number of calories consumed through food and beverages and the number of calories expended through physical activity and metabolic processes. To maintain weight, a person must consume roughly the same number of calories as they burn. If Charles consumes 1800 kcal and this matches his energy expenditure, he will maintain his weight.
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Basal Metabolic Rate (BMR)
Basal Metabolic Rate (BMR) is the number of calories the body needs to maintain basic physiological functions at rest, such as breathing and circulation. Understanding BMR is crucial for determining how many calories a person needs to consume to maintain, lose, or gain weight. If Charles's BMR plus his activity level is higher than 1800 kcal, he would lose weight on his new diet.
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Dietary Changes and Weight Loss
Dietary changes can significantly impact weight loss, depending on the caloric deficit created. If Charles's new diet results in a caloric intake lower than his total daily energy expenditure (TDEE), he will lose weight. Evaluating the specifics of his new diet compared to his previous intake is essential to determine if he will indeed lose weight.
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