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[Preview] Are all carbs equally bad? Dr. Fung answers

August 14, 2019

If you give a volunteer
an extra 1000 calories a day of candy and pop they will develop fatty liver. So they will gain 2% weight gain,
but a 27% rise in liver mass. So they gain some weight
but mostly fat in the liver. -It’s nasty, huh?
-It’s nasty. Because the fatty liver then
causes insulin resistance, which then in the long-term will raise
insulin levels over and over again. So it’s much more of a long-term problem than gaining the same amount of weight
around your waist. Exactly, because again you can barely measure
that effect of that 1000 calories a day. So again human experiment, they overfed
somebody 1000 calories of sugar basically. So it was like two cans of Coke
and a bag of candy and something else. So it sounds like a lot,
but it’s actually not a lot of sugar. Lots of people do that, right? Lots of people, especially adolescents. So in only four or five weeks
they developed fatty liver. That’s insane, right? So that’s what kids do these days, huh? They develop fatty liver
all over the place. But the good news is that
when they went back to their usual diet again the body weight dropped,
but only like 3% I think, but the liver fat fell right away. -So it’s reversible.
-It’s reversible.


  • Reply Siim Land September 25, 2017 at 5:27 pm

    Fasting can really cure so many nutritional diseases

  • Reply Terra Dawn September 25, 2017 at 7:05 pm

    I would LOVE to see more Dr.Fung videos! Thank you so much for always shining a light on low carb and fasting.

  • Reply Customgirl123 September 28, 2017 at 4:16 am

    There is nothing in this video about carbs…..Its about a study of sugary candy & pop and the adverse effect on the liver..

  • Reply nico godson October 4, 2017 at 11:20 pm

    I'm in Day 10 of water fast. Any suggestions for dealing with acid stomach and reflux.

  • Reply lamyeechiu October 12, 2017 at 2:08 pm

    Is that a yes?

  • Reply Random Thoughts October 14, 2017 at 7:18 pm

    What a misleading title. It does not talk about difference between carbs. It only talks about sugar and candy.

  • Reply nico godson October 14, 2017 at 11:43 pm

    Thanks I tried apple cider vinegar

  • Reply KenDBerryMD October 18, 2017 at 1:08 am

    Great short video, but maybe should reconsider the title…

  • Reply Krydolph October 20, 2017 at 8:10 pm

    How about nameing the video something that has relevans to the topic that is talked about? It is not the first time you make a video called one thing, and the topic discussed is something else. Its not that the video is bad. It is interesting, and named correctly it would still be… But now it seems like clickbait because even though the video is good and interesting, you promise something in the title, and you don't deliver…. Now I really want to know what Dr. Fung thinks about the question "Is all carbs equally bad?" Where is that video? Should I serach for "What happens when you eat 1000kcal more of sugar" to find that video?

  • Reply Zaid Ali October 21, 2017 at 9:17 am

    He didn't answer the question

  • Reply jaghad October 21, 2017 at 4:35 pm

    The diet doctor is a moron and a charlatan. People following him are thick, i.e. dumb as a doornail. Keep peddling lies buddy. Sigh.

    If you're Swedish then go follow Jacob Guidol at Träningslära. That guy knows what he's talking about.

  • Reply B12 blaze it vegan October 21, 2017 at 7:19 pm

    keto garbage

  • Reply 555 go ahead October 22, 2017 at 2:39 pm

    I don't fast but I do carb fee meals and sometimes do not eat any sugar or starch for 12 waking hours , I feel like when I do eat something sugary my body takes care of it with me feeling sluggish or tired . Maybe my insulin is more efficient now that it's not used as often.

  • Reply JustMe9 October 22, 2017 at 8:58 pm

    By what mechanism does a fatty liver affect insulin sensitivity in muscle cells?

  • Reply nico godson October 23, 2017 at 11:07 am

    Thanks I’m completely done my fast. 14 wonderful days. Now loosening average 1lb a day by intermittent fasting of 20 hrs fast 4 eating daily…. low carbs

  • Reply Patricia Beetschen October 26, 2017 at 4:13 pm

    Can IF reduce a fatty liver?

  • Reply texasofmyheart November 3, 2017 at 3:13 pm

    I wish he would have been asked, "What happens if a person consumes an additional 1000 calories of protein or complex carbs?"

  • Reply Karen Landy November 25, 2017 at 6:52 pm

    Hi dr fung
    I have my gallbladder removed and I have a under active thyroid will I still be ok to do IF

  • Reply Olafsos Huber April 8, 2018 at 12:43 am

    yep the title is absolutely misleading

  • Reply Billy Babu The Story teller April 8, 2018 at 7:30 am

    Dr Fung is amazing.
    Always putting it over in a simple way to digest (No pun intended)

  • Reply MGTOW TALK April 25, 2018 at 5:24 pm

    But how does fruit stack up?

  • Reply Yandapalli Sekhar Babu May 5, 2018 at 5:12 am

    good service through ur diet plan

  • Reply David May 6, 2018 at 10:09 pm

    This video is totally mistitled.

  • Reply Robin Rae May 9, 2018 at 3:32 am

    He is brilliant!!

  • Reply TheYoyozo May 12, 2018 at 10:01 am

    Whoever named this video did a shitty job.

  • Reply Patricia Nunez May 22, 2018 at 3:47 am

    So thankful to hear fatty liver is reversible! Thank you so much!

  • Reply gridokun May 28, 2018 at 8:33 am

    in short, its like force feeding a goose for foie gras.

  • Reply Peter Knobloch May 28, 2018 at 12:21 pm

    The description says "Are all carbs equal – or are some forms worse than others? Is it safe to eat fruit?"

    They go on to discuss eating candy and drinking coca cola.

  • Reply Andrew Bell May 30, 2018 at 8:23 pm

    shit title!

  • Reply Dean Ironrod June 8, 2018 at 7:45 pm

    yes most sugar is bad for you. and no not all carbs are bad for you. any "doctor" that disagrees is a quack and should have their degree revoked. also not all carbs are sugar, hence the beginning of this comment 😛

  • Reply Cliff Nielson June 16, 2018 at 8:33 pm

    You should retitle the video to:

    “does sugar cause a fatty liver?”

  • Reply Wanye Kest July 4, 2018 at 3:01 pm

    Everybody that is complaining either didn't watch the video or is stupid; he clearly puts an example of how people that took in sugar got fat around their liver as opposed to people that got it around their waist (by eating healthier carbs, but you should've made that connection yourselves).

  • Reply montanacrosses July 8, 2018 at 11:02 pm

    Can you have stevia without it raising insulin levels?

  • Reply Benjamin 3Stacks July 29, 2018 at 2:32 pm

    This has 0 relevance to do with carbs

  • Reply Clif Keens August 1, 2018 at 9:43 pm

    How misleading! He talks about OVEREATING CRAPPY carbs. How about not overeating and sticking to low GI, high fiber nutritious carb sources?

  • Reply felicia Bosch August 25, 2018 at 7:04 pm

    I'm grateful to Dr fung he wants to help all of us to stop messing up our liver

  • Reply DJClifton February 6, 2019 at 5:11 pm

    Need to consider changing your video title. Jason Fung does not discuss differences on carbs.

  • Reply Master Sales June 22, 2019 at 2:48 am

    Dr as a vegetarian what should i eat for diabetes cure after intermittent fasting can u name few

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