Burning Body Fat

Answered on August 19, 2014
Created February 28, 2012 at 12:26 AM

How long does it take to lower body fat by fasting?



on February 28, 2012
at 12:37 AM

Do you mean straight water fasting or intermittent fasting?

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5 Answers


on February 28, 2012
at 04:50 PM

I saw results right away. I've been following the 16 hour fast/8 hour feeding every day for over 2 weeks. I LOVE it and it really works for me. I've read some say that isn't really fasting, its just skipping breakfast. Whatever it's called is working and I am the leanest I've ever been. (80/20 Primal since Aug, 2010/100% Paleo since Jan 2011.) I would like to thank leangains.com for the information that has really helped me out. Some days I only eat two meals, and somedays like yesterday I ate a ton all afternoon. I don't count calories or worry about what I eat as long as I stick to 100% Paleo.


on February 28, 2012
at 12:45 AM

You start very quickly, but it's not a straight line. A more detailed question could be answered more usefully.



on February 28, 2012
at 04:03 AM

I would consider IF before continuous fasting.



on February 28, 2012
at 03:34 AM

It depends on your calorie intake and the duration of your fast- for example, let's say your maintenance level is 2,000 calories, and you are fasting for two 24-hour periods a week. If you eat normally the rest of the time, you will be accruing around a 4,000 calorie deficit. There are 3500 calories in a pound of body fat, so you would be losing around a pound of fat a week, or four pounds a month.



on February 28, 2012
at 02:16 AM

Yes, more details would be helpful.

Qualifier: I'm currently on ADF (alternate day fasting) so I go about 40 hours without calories, then eat for 4-8 hours then fast again. During my eating window, I typically eat about the same amount that I was eating every day before but I've read that many people eat about 125%. I haven't need more so far but maybe that's because I still have some excess fat.

I don't consider fasting, either short-term via ADF or long water-fasts, an optimal method of weight loss. I was driven by health concerns and I am not using ADF with fat loss as my primary goal although I am pleased to report I'm definitely losing fat. I read that it's common with ADF for people to lose 3 lbs the first week (and I did according to my doctor's scale) and then about half a pound per week. I don't know typical rates of weight loss for continuous water fasts.

If you fast, you'll definitely lose fat but the odds are pretty high you'll find it hard not to put it right back on.

Prior to going with ADF, I had months of successful experience with IF (intermittent fasting.) I'm used to fasting and not going nuts when I break my fast. That skill has been very handy so far with ADF and I suspect you need to have it--or exercise maximum will power--to avoid rapid weight gain at the end of a longer fast.

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