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12 votes
Ryan would like to lose weight. His energy needs are 2400 kcal/day. If he eats ~1900 kcals/day, in four weeks approximately how much weight will Ryan have lost

User Berrada
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2 Answers

11 votes
11 votes

Final answer:

With a daily caloric deficit of 500 kcal, consuming only 1900 kcal/day against a maintenance requirement of 2400 kcal/day, Ryan is expected to lose approximately 4 pounds over the course of four weeks.

Step-by-step explanation:

Calculating Weight Loss through Caloric Deficit

When attempting to lose weight, a caloric deficit is necessary. This means consuming fewer calories than the body requires to maintain current weight. For Ryan, who needs 2400 kcal/day to maintain his weight, eating around 1900 kcals/day creates a deficit of 500 kcal daily. Over a week, he will have a total deficit of 3500 kcal, which approximately equates to losing one pound, as 3,500 kcal corresponds to about one pound of body fat. After four weeks with a consistent daily deficit of 500 kcal, Ryan can expect to lose approximately 4 pounds.

User Nelu
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2.7k points
10 votes
10 votes

4 pounds would be the answer!
Hope this helped

<3

User Bartonjs
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2.7k points