View Full Version : Does fat require calories to maintain itself? Question

The Brotherhood
05-13-2016, 01:06 AM
Lets say a morbidly obese person eats 20k cals/day.

If he cuts down to 10k/day, will he lose fat? Keeping other health factors aside like ldl hdl levels changing promoting fat loss etc.

Or if he has a true maintenance of 2k cals, will he need to eat under that to see fat loss? Will he keep gaining weight at even 2500 cals/day, down from 20k?

I see formulas that try to calculate 'maintenance calories' from total bodyweight and I dont understand how these can work. I have read that only lbm burns calories, and that your maintenance is related to your lbm.

wont a 300 lb person eating 20k/day still keep gaining weight on 3k/day?

05-13-2016, 01:13 AM
Yes but I don't think anyone's maintenance is going to be 10k.

Lyle McDonald (bodyrecomposition.com) has an article somewhere stating how many calories a lb of fat vs. a lb of muscle takes to maintain everyday. I would link it but my work firewall blocks that site for some reason.

05-13-2016, 01:30 AM
1lb of fat requires 2-4kcal/day to maintain itself. 1lb of LBM requires 6-12kcal/day (lower end more muscle related higher end organ related).