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Ketosis - How many days before weight loss is coming from fat and not water?

Answered on August 19, 2014
Created May 07, 2012 at 7:50 PM

I have been eating/living/moving/sleeping paleo for approximately 6 months, getting increasingly strict with my diet. Now that I am within 5 - 7 lbs of my fat loss goal, I have decided to reduce my carbs to under 50g/day. Am curious as to how much of my initial weight loss is water, and at what point does weight loss reflect fat loss. Thanks. Btw I am 43 yo female 5'2 - 124 lbs.

7dc950fc76a046048e683d2a27dced37

on May 07, 2012
at 11:18 PM

You're welcome. That said, I don't think it's the carbs from your sweet potato and fruit that are stalling your fat loss (it's always harder when you're so close to goal). But it can't hurt to experiment!

3f0a69f164d8fac2cdee80c19526f83f

(205)

on May 07, 2012
at 10:01 PM

Thanks, that is very helpful and encouraging. My weight loss stalled for several months (mostly because my decision to "go paleo" was overall health improvement and not weight loss) but I did eat a sweet potato and fruit daily, so eliminating those have decreased my average carb intake from 100-150 to under 50. I will keep trucking along. Thanks so much.

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7dc950fc76a046048e683d2a27dced37

on May 07, 2012
at 09:11 PM

According to Lyle McDonald, a ballpark re stored glycogen is 500 g (a little over a pound) and for each g of carbs in glycogen there are 3-4g of water. In this case, glycogen would represent 4 or 5 lbs of water. Of course, the amount of stored glycogen actually varies person to person, and the time it takes to deplete it varies too.

Unless your carb intake has been really high, I'd bet you're mostly fat adapted from being paleo for 6 months. So I'd bet you won't see the same quick water weight loss that someone would who'd been eating SAD.

Given that, what I'd say is your weight loss would reflect fat loss right away, but it's hard to say at what point it's predominantly fat loss. Maybe a few days? But maybe it'd be right from the start.

3f0a69f164d8fac2cdee80c19526f83f

(205)

on May 07, 2012
at 10:01 PM

Thanks, that is very helpful and encouraging. My weight loss stalled for several months (mostly because my decision to "go paleo" was overall health improvement and not weight loss) but I did eat a sweet potato and fruit daily, so eliminating those have decreased my average carb intake from 100-150 to under 50. I will keep trucking along. Thanks so much.

7dc950fc76a046048e683d2a27dced37

on May 07, 2012
at 11:18 PM

You're welcome. That said, I don't think it's the carbs from your sweet potato and fruit that are stalling your fat loss (it's always harder when you're so close to goal). But it can't hurt to experiment!

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