Chart of Fasting Time-Points

(PJ) #1

Is there somewhere, anywhere you know of, a chart of time-points for fasting? By that I mean:

X hours results in Y process
Y days results in Z process
A hours starts reducing Y process
…or whatever.

Also: the same kind of info about “refeeding” durations.

It would really help people looking to make up their mind about experimenting, with how many hours they may choose to fast – or refeed.

I know this info exists to ‘some’ degree in the world. I just think it would be awesome to have a list – maybe a growing editable list or this thread, that when various researchers or papers might mention something, it could be added – that was here as a reference.

Even a small start would be great.

(Murphy Kismet) #2

Life fasting by LifeOmi. It has an article that goes up to 72hrs fasting. I really like it.

(Khara) #3

I searched for this but wasn’t able to find any articles, just info on a Fasting app.

(Erin Macfarland ) #4

Remember too that most charts you’d find would be based on someone that’s not fat adapted and they don’t usually address activity level or the state of your metabolic health. So someone with IR that is burning glucose and is sedentary would likely see benefits from fasting after a longer period- someone that is lean and active and metabolically healthy and is fat adapted will start to see those benefits much sooner.

(Murphy Kismet) #5

The articles are in the “learn” tab at the bottom.

Here’s a link to the article that should tell you what you’re looking for.

(PJ) #6

Thank you!!!
I’ll add the basics here. If I run across anything else I hope to remember this thread and come add it in.

12 hours
entered ketosis

18 hours
fat-burning generating ketones

24 hours

48 hours
growth hormone up 5x

54 hours
lowest insulin greatest sensitivity

72 hours
IGF-1/PKA reduced old immune cells broken down / new ones created

(PJ) #7

Admins, is there a way we could put this thread in the resources section? I keep trying to find it again for reference when talking in other areas and I seldom can. It’s such a basic kind of question it seems a good FAQ thing to me at least.

(PJ) #8

Fasting Stages & Associated Symptoms of Each
(Most of the symptoms, if they appear, are usually transient – lasting only a day or two)

Stage 1: Psychological Hunger (Days 1 thru 2-3)
• Blood Sugar levels drop below 70mg/dl
• Liver glycogen is converted to glucose and released into the blood (enough for ½ day)
• The body reduces basal metabolic rate (to conserve energy)
• The heart slows and blood pressure is reduced
• Glycogen is pulled from the muscles
• Quick loss of weight is noticed, mainly due to loss of water

Typical Symptoms for this Stage:

  1. Psychological hunger cravings (sometimes intense)
  2. Irritability
  3. Weakness
  4. Breach of sleep
  5. Acute reaction on look/scent/conversations about eating
  6. Sucking pain in stomach
  7. Discomfort of intestines
  8. Muscle weakness
  9. Headaches
  10. Dizziness or lightheadedness (from lowering blood pressure)
  11. Digestive upset
  12. Flatulence
  13. Nausea and vomiting are possible
  14. Bad breath
  15. Mucousy stools
  16. Glazed eyes
  17. Heavily coated tongue (a thick white or yellow fur coating, which can be scraped or brushed off)
  18. Skin odors/eruptions may appear
  19. Bad dreams

Stage 2: Acidosis (Days 2-3 thru 7-9)
• Fats are broken down to release glycerol and converted to glucose
• The energy for maintenance of basal metabolism is almost entirely met by the use of free fatty acids and ketones
• Increased norepinephrine (adrenalin) levels prevent the decrease in metabolic rate (after Day 5)
• Appetite is suppressed as ketones are formed by the incomplete oxidation of fats
• High levels of growth hormone (HGH) maintain muscle growth and lean tissues (after Day 5 – also the best time to exercise, due to the high levels of HGH)
• The body vigorously throws off acid waste products
• Scent of acetone from the mouth and metallic aftertaste in the mouth appears
• The tongue is covered by a white-grayish patch
• Ketone bodies are increasing in urine and reach its maximum on day 7-9
• Rancid oils are purged from the body
• Toxic waste in the blood
• Cleansing and repair of organs and lungs begins
• The colon is being repaired and impacted feces on the intestinal wall start to loosen and are autolyzed

Typical Symptoms for this Stage:

  1. Fatigue
  2. Blurred vision
  3. Possible dizziness
  4. Nervousness
  5. Backaches
  6. Muscle tightness (the legs are the worst affected as toxins accumulate in the legs)
  7. Cold virus (aka the body eliminating toxins)
  8. Emotional disturbances (if eating was used for emotional comfort)
  9. Occasional daytime weakness, drowsiness as well as breach of sleep
  10. Rare but possible sickness, nausea and vomiting
  11. Moderate bradicardia (48-60 beats per minute), possibly leading to blackouts
  12. Blood pressure drops (be warned to get up slowly and avoid sharp movements)
  13. Mild hypoglycemia
  14. Potassium and urea decrease
  15. Oily skin
  16. Possible pimples and/or boils
  17. Clogged sinuses (from periodic expelling of the lymphatic system, expelling mucoid matter through the nose and throat, sometimes in shocking quantities)
  18. Foul breath
  19. Pallid complexion
  20. Tongue is coated with a bad-tasting dryish mucus
  21. Urine may be concentrated and foul (unless a good deal of water is taken daily)

Stage 3: Normalization (Days 7-9 thru 14-16)
• Enhanced energy
• Clear-mindedness
• An increasing sense of well-being
• Acidic blood chemistry is gradually corrected
• The body’s healing process is at optimum efficiency
• The body scours for dead/damaged tissue, secreting substances to dissolved the damaged cells, irritating the nerves in the surrounding region
• Toxin irritation of the muscles (especially the legs)
• Excessive bacteria in the mouth

Typical Symptoms for this Stage

  1. Daily loses of weight decrease
  2. Dreams on food subjects
  3. Old injuries may become irritated and painful as a result of the body’s increased ability to heal
  4. Sore/tight muscles (the legs being the worst due to toxin accumulation)
  5. Canker sores

Stage 4: Accelerated Healing (Days 16 – 30)
• The body is completely adapted to the fasting process
• The body now has more energy
• The mind has heightened clarity and emotional balance
• Damaged tissue is now being replaced
• Cleansing periods can be short with many days of feeling good in between
• Symptoms of diseases significantly decrease or disappear completely
• Glucose, cholesterol, potassium, urea, bilirubin normalize
• There are now days when the tongue is pink and the breath is fresh
• The healing work of the organs is being completed
• The body works at maximum capacity in tissue proliferation to replace damaged tissue (after the detoxification mechanisms have removed the causative agent or rendered it harmless; while a short fast will reduce symptoms, a longer fast can completely heal)
• The lymphatic system is basically clean
• After day 20, the mind is affected with heightened clarity and emotional balance
• Memory and concentration improve
• Repair and regeneration of tissues
• Tumors are metabolized as food for the body
• Arthritic deposits dissolve
• Scar tissues tend to disappear
• Damaged organs regain lost function (if they can)
• Seriously ill people begin to heal

Typical Symptoms for this Stage

  1. Shorter cleansing days
  2. Rare discharge of mucus through the nose and throat

Stage 5 (30 – ?): Breaking the Fast with the genuine return of Natural Hunger
• The Breath becomes sweet and clean
• The Tongue becomes clean
• Body Temperature returns to normal, where it remains
• Pulse becomes normal in time and rhythm
• Skin reactions and other reactions become normal
• Salivary secretion becomes normal
• Eyes become bright and eye sight improves
• Excreta loses its odor
• Urine becomes light
• Hunger returns, indicating that the fast is to be broken; all other indications are secondary. Often one or more of the above secondary signs are absent when hunger returns, but one should not refrain from breaking the fast when there is an unmistakable demand for food.


(PJ) #9

Saw this image on reddit today, fits perfectly on this thread

(Doug) #10

:neutral_face: I’ve seen that chart several places, PJ. Good grief’’ is all I have to say… :wink:

It looks to me like people are truly just making stuff up. “24 hours autophagy.” – That is either simply incorrect, or so over-simplified as to be nearly meaningless. Glycogen depletion usually takes people into the 3rd or even the 4th day before the body is truly in “fasting mode where we’re burning our own fat and very little else.” With some people, it’s certainly possible that autophagy is increasing at 24 hours ( especially if coming from a ketogenic diet), but for quite a few days after that, conditions for autophagy will be improving. I’m surprised the chart doesn’t include “autophagy peaks at 3 days” - which is commonly seen and brutally false for humans, from everything I’ve seen.

I’ve never seen a study showing growth hormone was up 400% after only two days of fasting. And the only study I’ve read where the growth hormone levels were actually measured and tracked all the way through had it peaking at either day 21 or day 26; can’t remember.

(PJ) #11

Thanks, yeah the various sources of information on this topic do not all agree, that’s for sure.

the original info I posted, pretty sure I got from Fung’s site.