1lb of fat is ~3500 calories and that is simply 9 calories per gram of fat X 453... | Hacker News

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		anthonypasq on Nov 8, 2023 \| parent \| context \| favorite \| on: Intermittent fasting more effective than calorie r... 1lb of fat is ~3500 calories and that is simply 9 calories per gram of fat X 453 grams in a pound. its actually closer to 4000 but people just use 3500 because that means you would need a 500 calorie deficit per day to lose a pound a week.

steve1977 on Nov 9, 2023 [–]

It’s even easier in the metric system, where a 500 kcal (daily) deficit should roughly amount to a 500 g (weekly) weight loss.

And AFAIK this is calculated based on body fat actually corresponding to around 7.7 kcal per gram, not 9 (that is for food).

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