alt Hacker NewsI never understood why calories in == calories out was relevant when we can't know how many unprocessed calories are remaining undigested. Here's what the bots had to say: https://www.perplexity.ai/search/weight-loss-gurus-often-say...
(FYI - I stay thin by limiting calories, so I don't disagree that fewer calories causes weight loss)
Replies
nemomarx • 01/21/2025
cico is true, but you can't measure calories in accurately and you can't be sure of calories out accurately. isn't that fun?
(in practice as you know, you just kinda do it on feel and end up restricting calories enough to lose weight. but my own intuition is that I had to aim for 100 or 200 less than my estimated BMR so the math is very fuzzy isn't it?)
This theory is not scientific (food is not energy, the body is not a machine, measurements are not precise etc.) so there is nothing rationale you can say that will convince people who believe in it to switch to something else