1

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Differences between ketogenic and water fasts

Answered on August 19, 2014
Created March 02, 2012 at 6:16 PM

Are full calorie fasts useful or are ketogenic fasts good enough? I saw one study that neural regeneration doesn't occur with ketogenic fasts but perhaps the length of time matters? Typically, I consume my carbs only from 4pm to 9pm (with some low carb/protein foods at other times like nuts, non-starchy veggies, and creamy dressings). Am I better off with a 24-hour caloric fast or would a ketogenic fast be good enough? I don't think I can pull off a multi-day caloric fast but perhaps I could do a multi-day ketogenic fast, though probably not weekly. Is there benefit to that over a single day fast?

De267f213b375efca5da07890e5efc25

(3747)

on March 07, 2012
at 06:35 AM

Yeah it's a neat post - thanks! I've decide to do a little of both.

D31a2a2d43191b15ca4a1c7ec7d03038

(4134)

on March 03, 2012
at 11:50 PM

I don't know if anything in this thread could be of use to you: http://paleohacks.com/questions/13990/metabolic-difference-between-fasting-and-100-fat#axzz1o5gVUKJV I'll see if I can find something else.

D31a2a2d43191b15ca4a1c7ec7d03038

(4134)

on March 03, 2012
at 11:44 PM

Balor, have you looked at Peter's blog, Hyperlipid? He discusses some interesting things about this, amongst all the discussion of reports and science. There are often many gems in the comments after the posts. Here is one on rheumatoid arthritis: http://high-fat-nutrition.blogspot.com/search/label/Rheumatoid%20arthritis%20and%20fasting

De267f213b375efca5da07890e5efc25

(3747)

on March 02, 2012
at 08:51 PM

My goal is definitely not weight loss, as I'm only slightly (5lbs) above what my GI considers healthy. Rather, with some abnormal autoimmune tests I'd like to squash any cancerous cells there might be in case they're paraneoplastic. I also have some neurological curiosities and I've read that fasting can speedup up neuron regeneration.

96bf58d8c6bd492dc5b8ae46203fe247

(37227)

on March 02, 2012
at 07:42 PM

Exactly! Being in "no food at all" mode is something I find to be very pro-serene. :-))

96bf58d8c6bd492dc5b8ae46203fe247

(37227)

on March 02, 2012
at 07:40 PM

@Beth, if I fast at all I go water/black coffee only. It appears I'm good at fasting, who knew? The only question is how often I will do so long term. I'm not declaring a settled routine yet.

77877f762c40637911396daa19b53094

(78467)

on March 02, 2012
at 06:36 PM

I tried IF on a Keto level of carbs and ended up crashing horribly. Not sayin' badly's experience isn't valid, just mentioning that the more extreme you get the more genetic variation and general health matter.

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3 Answers

1
Ccacf7567273244733bc991af4ac42ed

on March 02, 2012
at 07:31 PM

I'll tell you now you can pull off a multi-day caloric fast. And once you do you'll have few concerns about mixing up day fasts, keto-fasts, eating-whatever-happens-to-be-lying-around fasts however you like.

There's a benefit to trying whatever you think you can. Personally though, it's a lot easier not to eat the wrong thing when you aren't bothering to eat at all. You can still aim to control what you eat on other days but if you're interested in fasting, I wouldn't risk wasting effort on not going all the way.

96bf58d8c6bd492dc5b8ae46203fe247

(37227)

on March 02, 2012
at 07:42 PM

Exactly! Being in "no food at all" mode is something I find to be very pro-serene. :-))

1
Dc77df0e0b3a7643c94ce84eb0ae1fb4

on March 02, 2012
at 06:28 PM

ketogenic isnt technically fasting, more protein sparing than a full on fast (obviously)

when i want to drop fat quick, i fast 24hrs once or twice a week while eating a keto diet the rest of the time. once "keto adapted" you dont feel much different.

then when i feel like im running out of steam, add in some PWO carbs.

77877f762c40637911396daa19b53094

(78467)

on March 02, 2012
at 06:36 PM

I tried IF on a Keto level of carbs and ended up crashing horribly. Not sayin' badly's experience isn't valid, just mentioning that the more extreme you get the more genetic variation and general health matter.

0
7dc950fc76a046048e683d2a27dced37

on March 02, 2012
at 07:04 PM

The folks who talk about ketogenic fasts are folks like Mat Lalonde and Paul Jaminet. The idea is to avoid eating protein to promote autophagy. So in this kind of fast, you do NOT eat protein-containing foods. i.e., the goal isn't to be in ketosis per se).

So which type you do depends on your goal. For me, total fasting is more useful in terms of overall calorie reduction.

96bf58d8c6bd492dc5b8ae46203fe247

(37227)

on March 02, 2012
at 07:40 PM

@Beth, if I fast at all I go water/black coffee only. It appears I'm good at fasting, who knew? The only question is how often I will do so long term. I'm not declaring a settled routine yet.

De267f213b375efca5da07890e5efc25

(3747)

on March 02, 2012
at 08:51 PM

My goal is definitely not weight loss, as I'm only slightly (5lbs) above what my GI considers healthy. Rather, with some abnormal autoimmune tests I'd like to squash any cancerous cells there might be in case they're paraneoplastic. I also have some neurological curiosities and I've read that fasting can speedup up neuron regeneration.

D31a2a2d43191b15ca4a1c7ec7d03038

(4134)

on March 03, 2012
at 11:44 PM

Balor, have you looked at Peter's blog, Hyperlipid? He discusses some interesting things about this, amongst all the discussion of reports and science. There are often many gems in the comments after the posts. Here is one on rheumatoid arthritis: http://high-fat-nutrition.blogspot.com/search/label/Rheumatoid%20arthritis%20and%20fasting

De267f213b375efca5da07890e5efc25

(3747)

on March 07, 2012
at 06:35 AM

Yeah it's a neat post - thanks! I've decide to do a little of both.

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