The Physiology of Intermittent Fasting (Science) | Jason Fung
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- Опубліковано 16 чер 2024
- Dr. Jason Fung provides a detailed description of the physiology of fasting, what happens to our body as we stop eating. Knowing this may help you lose weight. The body transitions by first using glucose from the food. In the second stage, it breaks down glycogen into glucose. In the third stage, it uses protein to make glucose, a phase called gluconeogenesis. After that, the body sustains itself mainly on stored fat. Check out my blog at / drjasonfung
More Information:
BOOKS:
The Obesity Code - Reviewing underlying physiology of weight loss and how low carb diets and fasting can help. www.amazon.com/dp/1771641258?...
The Diabetes Code - Reviewing how type 2 diabetes is a reversible disease and dietary strategies. www.amazon.com/dp/B0795BLS8D?...
The Cancer Code - Scientific exploration of how cancer develops - www.amazon.com/dp/0062894005?...
Amazon:
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Canada - www.amazon.ca/shop/jasonfung
*Fasting Aids*
Pique Fasting Tea (recommended)
www.piquetea.com/drjasonfung
Fasting Community and Coaching:
www.thefastingmethod.com/
UA-cam Medical Lectures (for specialist physicians):
1. The Roots of the Obesity Epidemic - • The Obesity Epidemic, ...
2. Therapeutic Fasting - The Two Compartment Problem: • Fasting and Weight Los...
3. Does Calorie Counting work? • Why Calorie Counting r...
4. Two Big Lies of Type 2 Diabetes - • Two Big Lies about Typ...
5. Reversing Type 2 Diabetes Naturally - • How to Reverse Type 2 ...
6. Insulin Toxicity - • Insulin Toxicity (How ...
7. Saturated Fat - Friend or Foe? • Is Saturated Fat Bad? ...
8. Diet and Disease - • Diet and Disease (The ...
9. Dangers of Fructose - • Fructose and Fasting (...
10. Insulin Resistance - • Reversing Insulin Resi...
11. Role of Hormones in Weight Loss - • Hormones in Weight Los...
12. The Obesity Code Lecture 1 - • The Obesity Code Lectu...
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#jasonfung #drjasonfung #fasting #fastingbenefits #weightlosstips #intermittentfasting #drfung #fung #calories #weightlosstips #caloriesincaloriesout #weightloss #nutrition #diet #health
Time Stamps:
0:00 Intro to intermittent fasting
1:16 Physiology of fasting
2:40 Changes during intermittent fasting
4:08 Gluconeogenesis during fasting
5:04 Growth hormone during intermittent fasting
6:04 Sympathetic nervous system activation during fasting
6:32 Electrolytes during fasting
7:19 Fasting is the transition of fuel sources
8:48 Fasting regimens for weight loss
For more science on why fasting works, check out this video - ua-cam.com/video/5hVX0Aot92k/v-deo.html
Wow thank you Dr.
Do you think fasting and keto will help Xanthelasma? I have a large on on each upper eyelid.
my problem with fasting is that I do not tolerate , get dizzy , nausea,headache. with more than 4 hours.
@@AnnaPinguin have you been checked for or have diabetes. Sounds like you may have hypoglycaemia when you don’t eat. .
@@AnnaPinguin do you use Himalayan sea salt in your water or a mineral supplement while you're fasting? I've seen several people say there are drops you can put in your water.
Here’s my story, two years ago I stopped drinking alcohol stopped eating or drinking any form of sugar. Stopped eating bread grains such as cereals pasta. Started slowly skipping breakfast then eventually lunch. It was hard at first but I was determined to do it. I only eat once a day now. Sometimes I have a cheat meal. Sometimes fast 48 hours sometimes 72 sometimes 24. Starting weight 248 pounds weight as of today 168 pounds. It isn’t easy at first but we’ll worth it. My energy is so good and I can walk without pain in my legs after all that excess weight is gone. And ill be 58 in nine days.
Congratulations!!!
Do you a lot of loose weight?
@@nancyissa4781 did you not read the whole comment
@@76adrienne I think she meant loose skin
How long did it take?
I love fasting. Been obese for 40 years and nothing worked permanently. I never even considered not eating at all. I prayed my heart out and I believe God led me to IF! It's the easiest thing I have ever done. Down 100 lbs and over half way to my goal. I feel better in every way. Don't get hungry hardly ever and when I do, I just wait it out. My longest fast was 7 days. Just came off of a 5-day fast and will do another one starting Monday. I won't ever go back to 3 squares and snacks. I know for sure that I don't need to eat like that anymore. I eat celebratory foods for my birthday and Thanksgiving/Christmas and then it's right back on to fasting. Right now I'm eating only 3 days a week until I hit my goal and then I'll either do OMAD or Alternate Day Fasting. It's the way I can live the rest of my life. By the way, I'm a female and 66 years old and have absolutely no problems with fasting. Love it!!!!
Agree!!!
You give me hope
I met with my Dr. Today told her I was fasting . She told me to eat snacks. Getting a new Dr.
As long as you’re not pregnant or breast-feeding or perhaps 10 years old LOL…
Sure way to keep you fat! Smart move on getting a new doctor. Share Dr. Fung's info.
"If" I understand Dr. Fung correctly it is OK for us to have snacks, it just depends on what the snacks are. Basically nothing that will spike our insulin.
So instead of just avoiding the obvious things like cookies, also avoid things labaled low fat because to make up for the lack of taste from taking out the fat, they add lots of sugar and carbs. Instead snack on baby carrots (18 on the insulin index) or cucumber slices (17 on the insulin index).
I can fast for days easily. My problem is when I come off the fast I over eat AND what I eat is trash. So I'm trying a different approach to weight loss where instead of fasting, or even "calories in calories out" (check out Dr. Fung's video on that), I am going to take Dr Fung's advice and just eat right by sticking to foods that are low on the glycemic and insulin indexes. . . .
You could eat meat snacks like beef jerky all day but if you don't feel the need then why do it?
The worst thing is these snacks are going to be junk food. Fruit is awful for you, and any packaged food is unhealthy no matter what marketing they put on it.
I’ve lost 77lb so far with fasting for an entire year. I went from 277lb to 199lb. I’m only 29lb away from a healthy BMI.
Amazing! Congrats! I have to lose 30lbs. Thank you for the inspiration.
Yay! Congrats, keep up the good work!!!
That's amazing congrats
Wow so impressive. So proud of you. Keep up the good work- on to a healthy lifestyle and longevity, yay!!😍
So you only had water for the whole year?🙄
It sure does work. I've lost 95 pounds since January. I only just started working out! Fasting is extremely powerful. I didn't do Keto, just kept my carbs fairly low. (50-60ish grams per day). I'm a 27 year old female for reference. I started at 287.
May I ask what fasting regimen you used?
@@JoinTheTemple of course! I did the 16:8 method. My eating hours were between 10a.m-6p.m. I started fasting at 6p.m and didn't eat again until 10a.m the following morning. (I just wanted to clarify just in case you're new to fasting!) :)
Good luck to you!!
@@baileykeith6650 did you have any problems with brain fog and low sugar. Thanks
@@tulio3571 It's been a while since I first started but I don't believe so. Our bodies truly thrive off fasting. You'll notice a boost in energy and a mental sharpness if you can hang in there and get past the first two to three days while your body adjusts to the change. 💪
@@baileykeith6650 thank you , i have been fasting mostly 16/8 ,cutting carbs and sugar . it works for sure , the fasting itself is not a problem i have gone 24 hours and could go longer but the brain fog gets to me. Lately i will try taking salt and magnesium . thanks again.
Down 218lbs since January 2019.
everybody can say that, please give us some details
You down more weight than my total weight...
Awesome congratulations
Keep it up. Great!
Awesome job, what was your regimen?
i'm mostly here for the comment section to read about the success stories from people because that's the kind of positive energy i enjoy. keep going guys, you're all doing amazing. also my two cents on how to stay motivated: don't see fasting as a means to a goal but as a complete lifestyle. i'm not fasting to reach a number on a scale, i just want to live healthy and fit into the clothes i like and as a bonus positive side effect, spend way less money on junk food or snacks
Me too...
Cheapest Diet… EVER!!!! ♥️
(😬 please don’t smack me around for this… I’m a true believer and disciple of IF and extended fasting. Breast Cancer Survivor of 5 years; PBWF advocate; down 121lbs from 254. But, you gotta LOVE 💕 how inexpensive it is to heal yourself!!! Currently, my Chemo is running at $16,548 each month. - Gotta LOVE ❤️ a good insurance company, too)
- Nothing but gratitude 🙏
@@psalmsb4proverbs350 What is PBWF?
@C S
Thanx for that great way of looking at this.
@@michelemoneywell8765
Plant Base whole food
The best thing that's happened lately is to see Dr. Fung more active on UA-cam. His videos should have subtitles in all different languages so non-English speakers could have the chance to learn from such an honest doctor. Keep it up, Doc!
💥DR JASON FUNG HIS NOT INTO THIS WEIGHT LOSS INDUSTRY FOR MONEY, BUT HE REALLY WANTS TO SAVE PEOPLES LIFES AFTER LOSING LOSING 100lbs FOLLOWING HIS TEACHINGS, DR FUNG IS A HERO 🏆
Absolutely agree
I like Fung, but he is definitely making bank, but making money off a passion is play not work
@@mythicalprayer1316 I totally agree it’s his PASSION 🏆
He's definitely making money out of it, but there's nothing wrong with that.
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Down 25 pounds in two months. Thanks Dr. Fung!
that's 1.5kg a week. Probably at the limit if you want to keep it healthy.
👏👏👏
Wow! What fasting regimen are you doing? 16/8? Alternate day?
what did you do???? how many hours of fasting per day??? and how did you cope with the hunger???
Well done!
@@AnnaPinguin I stopped eating all processed food. Cook everything at home when I can. I drink crystal light once in a while when I eat. I do have bread, rye, lower in carbs I found. My carb limit is 20g per day. Also have for 12 hours, I eat, and fast for another 13 and eat again. If I feel hungry, I just have an ice decaf coffee with one splender for taste. I eat good fats. Meats, chicken, pork. No rice, unless brown rice. No white potatoes or breads unless it’s rye. It’s working for me and feel good.
I lost 12 kgs in 3 months with 18-20 hours fasting daily except on the weekends. All the credit goes to Dr Jason Fung! Thank you
Dr, god saved me through you! I can’t thank you enough for all the wonderful books and podcasts you have done. I was infertile for 9 years caused by PICOS. Guess what after i did intermittent fasting i got twins and within 9 months i was pregnant again!!! You are so amazing Dr Fung. Stay blessed ❣️
Can u plz tell me wht is the duration of ur fasting which window u follow.. 16/8 aur 18/6 Or 20/4
@@gudiyachoudhary4466 i did 20/4 most of the time. My longest fasting was 51 hours
I also have pcos with a lot of hunger. How did you overcome the hunger while fasting?
@@Calejandre138 Eat a lot of protein, fat and fiber in your eating window. Drink a ton of water a day. Also try apple cider vinegar. You got this!!
Waow congratulations . you are blessed
Thank you so much Dr. Fung! You have changed my life! My Fiancé started doing 23 hours fasts daily. He lost 160 lbs! Then I joined in and I have lost 75lbs so far. Not only that, but My PCOS symptoms have greatly improved!
We can look forward to a future together now, one that includes children. And we will be able to keep up! You have given us hope. I am so grateful! God bless you!
Hi do you have any recommendations. I have endometriosis and I would like to get healthy with hopes of pain relief. I want to try this but I don't know what to do or where to start.
@@Tryvoie2 I can’t promise you it will solve endometriosis. But being overweight sure is painful in many ways I didn’t even realize, so it should definitely help. What my now husband and I did was just pick one meal a day to eat. We would try to make it roughly 1000-1200 calories, but we didn’t really count. My husband liked to go to a restaurant with the calorie counts on it so he didn’t have to do any calculations. And we took a multivitamin with our meal. Outside of that meal we had only water, and black unsweetened coffee or unsweetened tea. No other food or beverage.
It works great! I did it for a year and I hit the 100 lbs lost mark! I started getting a regular period for the first time in my life and am now pregnant with our first child!
Fasting is mentally challenging, but if you can just push through the first 6 weeks or so, you begin to forget about it because it becomes a habit. You just have to remind your self that you are not starving. You’ve already eaten this meal and you are now taking from fat stores.
Once it becomes a habit, it is in my. Personal opinion, the easiest diet to maintain, because you can eat anything you want. You just have to have it in your eating window. Also, if you can find someone else to do it with you and you, I found the support and accountability very helpful. Good Luck!
Thank you for your response. I'm 70lbs over weight right now. I want to do the 16:8. Did you guys make healthier food choices and did you exercise?
@@Tryvoie2 No, we did our normal evening walks we always do, but we didn’t do any extra exercise or change our food choices at all. We didn’t want to do anything that we didn’t see ourselves being able to sustain for the foreseeable future.
I am also of the opinion that when you are severely overweight as I was, doing hard exercise is more harmful than helpful to the body. Just do what you need to do to make you feel strong and keep you capable of living your life.
I personally recommend OMAD over 16:8 because I have no self control and once my eating window opens, I can’t stop myself until I am very full. So I actually gain weight on 16:8 because I get full, but then later in that window I just keep eating because a bit of room has opened up in my stomach. It was just better for me to not give myself the option to eat for a longer period of time. Plus after a while, I no longer felt hunger outside of my 1 hour eating window.
Now that I’m pregnant though, I can’t really keep up the 1 hour window due to nausea and lightheadedness so I’m trying to figure out how to control my portions and I’m really struggling with it.
But everyone is different. If you are good at having a couple of portion controlled meals during that window, you’ll probably have more success with it than I did. Try it and see what works for you. I know some people who are very happy doing 16:8.
Great job!! May Jesus continue to help you through everything!
I'm on a relatively light 16-8 fast for the past year 7 days a week. I've kept my carbs to under 50g per day and I've lost 84 lbs in the past 12 months. A1C dropped from 8.4 to 5.5 (without medication) and I'm off my BP meds too.
Wow happy for u started mine let me see how it goes 🙏
@@jojoandinda8721 Good luck...couple it with a keto diet and the pound will literally melt away.
Would u say it works for women mid 40's?
@@janellewright8199 I was in my mid 40s when I started...though I'm a man...worked great for me!
Impressive. Well done.
I’ve only been doing IF for two weeks and my waistline has gone down so much. I feel energetic and I don’t have brain fog anymore. Thank you Dr. Fung for sharing your knowledge. You’ve changed my life! 🙏
Hi Mama G - So what do you actually eat?
Carole Drabble I'd like to know as well, it is helpful to learn how others start
@@caroledrabble3404 Mamma G said she is using IF, intermittent fasting. So it's about fasting, not the food itself. {But following a high fat, low carb plan makes it easier to start fasting after you get fat-adapted.)
Pat - thank you so much for replying xxx
Mama g, you say you no longer have brain fog ,what did you take or they just disappeared? Thanks
so happy that dr.fung is making videos again!!!
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He is my favorite dr. Waching his videos makes me hopeful and sure that one day my omad will work for sure i will never quit. But its frustrating when its pletue. Please give me hope to overcome my pletue
Amén
Me too!
We need more videos from you sir!!
I had success with OMAD, then I got impatient and went for longer fasts but I created a bad relationship with food by having long fasts and binge eating. It threw my body out of whack because I stopped eating at a similar time each day. I’ve managed to get back on track with OMAD by balancing my hormones as I consistently eat once per day at around 5pm. Fasting is great but don’t over do it. Like everything it’s moderation :)
You’re the best Dr. Fung. As a student who just took Biochemistry, you have a great way of explaining something so difficult.
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@@mahmoudzaki1984 Please don't push products here. Fasting is about putting *less* into our bodies, not more.
Tumble Bug it’s a Bot
@@BruceLeroyUK Oh! I guess I finally met a "bot." They sound an awful lot like greedy, dumb people. Maybe that's why they're so convincing?
@@tumblebugspace yes my friend.
Thank you doctor Fung. Having been a type two diabetic for over 23 years I am now off all 170 units of insulin and 2,000 mil of Metformin. I’m down 45 lbs. This is a result of intermittent fasting 16-20 hours a day and also some extended fasts of 72 hours. I also eat under 20 grams of carbohydrates a day. Although after 9 months of this lifestyle my BS’s aren’t where I’d like them to be, overall I’m healthier at 65 then I was at 45 years old. It gets discouraging sometimes when the numbers don’t improve as fast as you’d hoped but I’m determined to keep moving forward with this lifestyle and looking forward to one day being able to say I’ve finally beat diabetes. Thank you for all you share here on your channel and for your amazing book “ The Diabetes Code”.
I found his videos in 2016 .
I was 210bls I was able to loose 60bls with keto and fasting.
Fasting helps me control my sugar levels
That's amazing how long did it take you
Dr Fung I have lost 26 pounds in 6 weeks by doing nothing more than 16/8 IF and lowering carbohydrates. You are simply amazing and your channel is a true blessing to us to struggle with weightloss!!!
Two months ago, I had my labs done after one and a half year of not visiting the doctor due to Covid precaution. The results came back with high blood pressure, type two diabetes and high cholesterol. I told my brother about it, and he suggested watching videos Dr. J Fung. As of today, started fasting a month ago, I've lost 11lbs. My jeans that I couldn't fit into for years slip right up. Thirty more pounds and I should be at my ideal weight for my height.
My fasting plan goes as follow: My last meal is between 5 and 6pm. My first meal is between 12 to 1pm, two meals per day. In addition, I cut out dairies, reduce my race consumption by 75% each meal and *ABSOLUTELY* no fast food, junk food and sugary drinks. My girlfriend started with me and she also lost 11lbs so far (in a month).
Doctor Fung is the best. I readed "The Obesity Code" in the beginning of august, decided to try fasting mid august, fast foward 4 months later and im down 60 lbs. from XL clothes to M. Now I fast every day 20:4, OMADS and 2 times a month I do a 48/72 hr fast and I feel better than ever. Doctor Fung is an absolute genius.
Did you drink during your fast?
@@gulnorapomfret9769 During my fast I only drank water, black coffee (with no sugar/cream/artificial sweeteners) and tea (green tea mostly). And I ALWAYS avoided sugary drinks, even when I wasn’t fasting.
Thank you for your response 🙂
That’s fantastic!
But isn’t that simply starving yourself?
It never made sense to me that people would say you're going to lose your muscle mass when you lose weight because if you actually lose weight your body should be eating your fat not your muscle. So this totally makes sense. Thank you for such a clear and concise explanation.
For close to 5 decades, I subscribed to the theory that exercise was the route to weight loss and weight control. Total fiction. Thank you Dr. Fung for “The Obesity Code”. I started IF (20/4 occasionally 23/1 one meal a day) at 205 pounds and I’m now, 7 months later, at 160 pounds. Thanks you Dr. Fung.
I’m doing my ADF schedule, just pass 20hr. Just wanna say thank you for all those who sharing their success story. It really give me energy and vibe needed to push through my fast.
Thank you for explaining everything the way you do, Dr.Fung. I've been fasting for about 2 and a half months now. I do 36 hour fast with 24 hours off. Everything has gotten better! I've lost weight...30 lbs, more energy, sleep better and my blood sugars has gotten so much better that my insulin dose has been decreased by more than half! Thank you!
Intermittent fasting definitely works! I’ve lost 18 pounds in 3 months. Also did low carb but not Keto per day. Not one day of exercise due to an injury. I plan on starting exercise soon.
My 14 year old daughter has started fasting. She just survived her stage 3 cancer diagnosis this March. The treatment that has saved her life took away her very fit body in a matter of a few weeks. She gained around 50 lbs. She says it’s hard to look in the mirror bcuz she doesn’t recognize herself overweight and without hair. She says fasting helps deal with the nausea from her medication and she just feels better. She does a 16/8 & a OMAD. I just want her to feel happy and good in her body again, so I’m supportive of her choice. Is fasting okay for a teen recovering from cancer?
You are a great person Dr. You helped me a lot. I am trying your way of fasting and for sure I am expecting results and I will be the most happiest person in this world as I have tried so much to loose weight but it was happening very slowly and the weight was coming back all the time. But for sure I have a revelation from your videos. May God bless you Dr. Testimonials are really encouraging. Thank you.
Check out Dr Vincent Longo. He talks about fasting and cancer and yes it does help.
Absolutely it is good for her and NO SUGAR. Sugar feeds cancer cells. I too survived cancer and it has been over 14 years. Congratulations on her success. She is doing the best thing for herself that she can.
@@theresajopson4157 did you ever go back to eating sugar?
@@virgoteaze No. Your daughter is absolutely doing the right thing. Her body has survived a trauma. You are absolutely correct when you say the treatment that saved her life changed her body but it is only temporary. Her body will adjust and heal but it takes time. I now eat Carnivore or a meat based keto way of eating .It has been the best thing ever. It allows the body the rebuild and eliminates any possible food sensitivities. There is a web site called meat heals rx that has so many inspiring testimonies. Unfortunately mainstream media and even the drs will say otherwise but when you survive something like that you need to take your health into your own hands and follow your instincts. When I was getting chemo there would be trays of sugared donuts around and I just could not believe it. I eat a meat based diet and exercise on a cellerciser. It is a small trampoline and works to heal every cell in your body. Quick and easy and gives you oxygen, Cancer cannot exist in an oxygen rich environment. No sugar because sugar feeds cancer. They use a sugar solution in PET Scans because it makes cancer cells visible. Sad that these simple measures are not in treatment. Please fell free to reach out again. Not only have I gotten through cancer almost 15 years ago but I am a nurse. I have learned more through my own journey than I ever did in school about cancer. I wish you both the best and speedy healing and recovery for your daughter.
One meal 14 days lost 10lbs intermittent 23hours coffee, tea, water big salad with a protein.
God bless you Dr✝️
Thats all u eat? Im starting this week
@@yajairaaguirre5348 you Will lose 4-5 lbs each week. Eggs bacon lots of veggies in the salad Olive oil spices. Walk
Thank you for getting all this wonderful info out to the masses. Losing 155 pounds has been life changing!
Good for you! Keep up the great work.
Hey, congrats, what was your regimen?
Dr fung .. i am so thankful to moment when i found your video... within 59 days i am down 43 pounds and reversed my metabolic syndrome .. thank you
I did this in the past and lost weight. I forgot how much but it works. I'm on a water fast at the moment. On day 6 and have lost 14 pounds. I plan to do 16/8 once I'm done to continue my journey
Can I please ask you losing weight that fast is it causing loose flabby skin as thats what worries me.
I started fasting on accident about three weeks ago... I say on accident because the first week of fasting wasn't really intentional, I was just feeling really depressed and I didn't feel like doing anything, even eating... So that's when I learned that I really could make it through the day without eating, so I kept fasting... Now in about three weeks, usually eating one meal a day, my 3XL shorts have become too big and I had to search for my old 2XL shorts...
I started in July 2022 at 200lbs...I am now 35 lbs lighter!! Fasting has changed my life. I'm also no longer pre-diabetic, my thyroid is back in normal range, my plantar fasciitis went away and my joints don't hurt anymore. I'm 52 and also did this with zero exercise!
Great job
GREAT ADVICE Dr. Fung! Thank you so much, this has helped me so much!!! I've lost 50 lbs started out with 16:8 Now I'm doing 18:6 five days a week, and 20:4 two days a week. . . BETTER and faster results. :)
I’m on 16-8 since March best decision I have ever made.
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And 16/8 is sooo simple that it really doesn't take long to adjust and is still incredibly effective.
@@curiousobserver4525 yes that’s true I think after three weeks I thought I can do this and haven’t look back since.
@@curiousobserver4525 I agree. Most of those 16 hours of fasting should be you sleeping...
I started 10 to 6pm a week ago. I am so happy as I ha e lost 1kgs and no craving and most importantly feeling better so looking forward to December fit body loading. Well done to you dear.
Dr. Fung thank you for the very clear explanation of what happens during fasting. My primary reason for fasting is for my fellowship with Jesus Christ and over the years I am learning the plethora of other benefits it causes in our bodies also. Thank you, thank you 😊
Thank you Dr. Fung for the science. I lost 50 lbs with intermittent fasting. You were my resource.
Yes this works! And the best part is that it’s free!!
Hi Dr. Fung, i'm 90 days of intermittent fast/OMAD and i've lost 20 pounds. 15 more to go
Honestly, i already knew all this theory, but i just love hearing this amazing doctor talks..😁
Betul tu Putri 👍
I just started experimenting with this when I came across Dr. Berg's videos. I came down 10 lbs in 2 1/2 weeks. Can't see it yet, but that's what the scale says, lol.
Another good metric to monitor is waist size. I've been really interested to watch how my waist reduces with fat loss. And I'll be equally interested to as I put on some muscle - expecting my weight to go up with a stable waist size
@@iainmillar1532 Just broke a plateau. Yea and Phew!
Me too
I started OMAD on 1/1/2021. Today is 1/31/2021 and I lost 8 lbs in 4 weeks.
I went from 285 down to 196lbs at 6’2 using a mix of Keto and a 36 hour fast once a week fast along with a 72hr fast once a month....I eventually started eating bad again and got up to about 246 so now I have been eating every 48hrs and tracking my glucose and I feel great.....down almost 15lbs in less then a month (but I’m a big guy).....she is correct when she explained that it is super hard when you 1st start a fast. Think of it like you’re quitting smoking but there are cigarettes everywhere. Yes Sugar/carbs is a drug. What if they told a crack addict that they couldn’t totally quit crack all together but had to use it in moderation 😂😂😂.....I recommend starting a fast on Friday without any plans for the weekend to get over the sugar withdrawals and I promise it will get easier...Well after the hunger pains, having no energy, and headache goes away.....good luck everyone.
Maybe you should just adopt a daily fast. I eat dinner only (20:4). You get used to it and it becomes no big deal. You also save a ton of money and time. What you are doing sounds unnecessarily painful to me.
@@rickprice6312as if I eat my insulin will go way up 170 and as most people’s insulin will drop to 80 within three four hours of eating my insulin will stay elevated for sometimes days. I can eat 600 calories a day for weeks and not loose any weight so I’m just trying something new. Yes for 99% of people Fasting will work great and going back to a 36 hour fast with strict keto probably would work after some time but I just figured I would try this.
When you stop the caffeine you also get headaches. I don't get hungry near as much as I just crave food especially anything with sugar.
Already lost 3 diabetes medications in 7 weeks including insulin, glicazide and Ozempic. Lost 12-13 pounds so far also but doing Ketogenic diet also. 8-16 intermittent fasting 3-4 days a week
Hello ma how are you doing
I’ve have lost 80 pounds with fasting and feast using low carb high fat, you are the best 💪🏻👏🏻👏🏻🙏🏻 nowadays i eat 3k calories with no weight gain at all, because i learned with you about insulin! God bless you, Doc! 🙌🏻💪🏻👊🏻
Good for you. Keep going c:
Eat big fast long low carb refeed.
Best way to do it IMO
Eagerly waiting
yes, please don't stop making videos, we look up to you!
Absolutely.
I began my journey of intermittent fasting last June and back then I weighed 123 kg.
Yesterday I weighed myself after 5 months of intermittent fasting. I weighed 100.5 kg
everybody can say that, please give us some details
@@norbertmachaj6127 As it is said in the book ....Quit sugar and , bread and refined carbs ... Respect the window of eating. Eat clean and be patient.
@@madimen7319 what is your eating window? do you count calories? do you exercise? do you loose weight equals? do you have moments/days of eating dirty?
@@norbertmachaj6127 I try to vary . Sometimes i keep the six hours windows afer 6 pm and sometimes before . I do water fasting for 48 hours after I eat junks like pizza or some homemade whole wheat bread . I just keep myself away from suger and white flour and pasta and all those so addictive refined carbs. I don't count my calories lest in those cheating days.
@@madimen7319 do you count calories? how much carbs do you eat? what is your source of carbs?
Another truth bomb by Dr. Fung Thanks for putting these together!
Oh and great job on the new format! Your last few videos sound so much better now that you’re using a LAV!
Started about a month ago doing the 16/8 method and I’m starting to lose weight! I’m not perfect, I have cheat days but it’s STILL working!! I also have way more energy, less pain & I’m not as hungry anymore! Love this!!! Thank you Dr. Fung!
Dr fung and dr cywes..... so awesome. Down 95 lbs with 5 lbs to go!!! Dr Fung provided the tool ( IF ) ... and it works baby!!!
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@@mahmoudzaki1984 why would we do that when the man clearly told us how to do it for free in the video? 😹
Does bulletproof coffee break the fast and stop ketosis?
@@christopherdoran3608 no
@@missnurseeri is there data on this?
Thank you Dr Fung!!
I have never heard any doctor Says it this way... Thank you so much Dr I am so grateful
Thank you, Dr. Fung...great video!
Just started my journey the week of Thxgiving and there have been some challenges and setbacks but still losing and fine tuning the process. Looking forward to continued success for myself and my mother! Thanks Dr. Fung, so glad I came into your teachings, keep doing what you are doing!
I can Listen to Dr. Fung and Gary Taubes all day!
Wow, when I first starting to watch you I wrote the subs down, it was 63.4 K. Now over 303K. You deserve ever one. WTG!
You *rock,* Dr. Fung. Thanks for another great presentation, explained thoroughly and simply!
So easy to understand. I enjoy your more technical lectures, but so appreciate the simple, straight forward explanations with grafts. Also love the individual stories. Consider taping or interviewing the individuals. So inspiring!. Thank You Dr. Fung.
Theses are so great. And seeing patients story is so good.
Thanks team
Thanks Dr Jason Fung, appreciate your valuable advise and all your great videos and work.You are the best.
Love you Dr. Fung. I started to water fasting with confidence for watching your videos and learn a lot from you. I have lost 1 kg per day and keep swimming while fasting. And feel really good. I'm obese, prediabetic, and with PCOS and I need to loose at least 25 kg, but the fasting is wonderful and give me hope in my health journey.
I've been with gynecologist, nutriologist, bariatric, endocrinologist for years and haven't resolve any one of my health problems, only mantein the symptoms a little under control, but the bottom problems are still there, stronger than ever.
How do you manage your PCOS?
Hey, I went through 2 water fast for a week time. Someone like me need some magnesium supply to prevent muscle cramp and irregular heart beat. I took himalayan salt and some electrolyte powder. Hope it works for you too.
I put in your hands the best products to burn fat approved by the US Department of Health
1- Keto Actives
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2- Nutrigo Lab Burner
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Don't give up. I'm rooting for you.
Thank you so much Dr. Fung🌲
You are helping so many people, sir. Myself included. Thank you.
Thank you, Dr. Fung! Those were some great pointers. 😃
Fasting and a whole food plant based diet had me loose 42lbs in 13 weeks. I eat an early breakfast and lunch by 11 am and fast for 20 hrs a day. I have cheat days too, but am mostly vegan. Dr Micheal Gregor has been a blessing also on teaching my the right foods to eat. I started at 241 now I'm 199, will go to 160 lbs. I'm 51 and for the first time in months I have had no random palpitations and my knee arthritis is so much better, and my bp med is half already. I asked a physician why they don't encourage this lifestyles, I was told" we see way too many patients and the time isn't there, and most people don't wanna hear that, just want a pill". How eye opening, you really have to take your health in your own hands!!! I wish all here well!!!
I wouldn’t take Dr Gregor too seriously. Many people have ended up very sick following his advice.
Dr. Fung... Thank you so much for explaining this in a way that is fun to learn and easy to understand 💕
Thank you for all the wonderful videos. Happy holidays to you
Thank you Dr Fung, you are a life saver 🥰
This is a really great video. Easily explained, respects the listeners while educating. Awesome! Thank you!
Short and sweet (without the sugar!). Thanks
Very helpful! Esp about not giving up, and giving it time. Needed to hear that.
Thank you! Thank you, Dr. Fung! You are helping me and so many other people!
❤️💕❤️💕❤️
The clearest explanation about this subject Ive ever listened to here in UA-cam. Im happy to have found you Dr. Fung.
Thanks Dr. Jasong Fung. God bless you more!
Dr. Fung. I send my clients the link of your channel. You are amazingly wise.
Thanks for your information!
I'm loving the Cookbook Jason!
I love this short, to the point video.
Merci Dr Fung. Vous etes mon idole !
Thank you so much.
I have read your book the obesity code. Its beautiful. Thank you for spreading your knowledge
Love being educated by Jason Fung, smart genius doctor. Thank you Dr Fung.
Clear, concise and helpful!! Thankyou for helping me build trust with the process, not to mention enlightening on so many things!!! Must watch for all!!
Dr , you are incredible . Can’t stop listening to your info !! Keep up the good news , it doesn’t go to waste !
Great, keep up the good work. Thank you, Dr.Jason Fung.
My biggest inspiration along with Butter Bob.
Thank you Dr . ❤
Thanks Dr J. F it's work for me I feel 30 yrs younger,
Thank you for your weekly talk it helps to keep me motivated
Another Awesome video Thanks Much Love ❤❤❤
LOVE this guy!!!!!! Thank you Dr. Fung!
My favorite part of these videos is the testimonials. Can we hear more of their stories please?
God bless you Dr.
Thanks again Dr. Fung.
Thank you Dr Fung, I just subscribed your channel. Please keep posting your videos on regular basis.
You are fasting when you sleep & use up stored calories & that's why you don't die in your sleep every night-- Dr. Jason Fung
Wow, that was a very comprehensive and well organized talk! Thank you 🙏
Great video as usual. Thank You for keeping your explanations clear & simple, in a manner, us lay people can understand.
I live in a country where a lot of people think that if they explain things so that everyone can understand, it lowers their reputation for being clever. "If everyone can understand my subject, then I'm nothing special."
However, my view is that it's only the very clever people that can break things down and explain them in simple words that everyone can understand. This video shows you what I mean.