re: Question for very large people

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Let me help you out here

At 20, you are eating 2500 kcal per day

By age 30, you need to reduce caloric intake by about 2%, or 50 kcal per day to keep the same weight. This assumes the same physical activity that you kept at age 20.

By age 40, you need to reduce caloric intake by about 5%, or 125 kcal per day (so 2375 kcal per day) to keep the same weight. This still assumes the same physical activity that you kept at age 20. How realistic is it to have same physical activity at 40 than at 20?

It increases more over time.

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