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Intermittent fasting

13

Replies

  • Posts: 479 Member
    mmapags wrote: »

    2 points of disagreement with your post that I have. First, woos do not indicate emotion, just disagreement. You read in whatever emotion you wish.

    Secondly, fasted cardio is no better for weight loss than cardio in a fed state. If you think there are studies that prove otherwise, please post them. All the studies I have seen have shown no difference or advantage for fasted cardio. Fat/weight loss comes down to energy deficit, whether one trains fasted or fed.

    You are actually correct about the fasted cardio. There is a lot of literature, but I read a meta analysis and on the whole it's apparently bunk. Neat! The stuff I had previously read indicated that it primed your body to be better able to mobilize internal fat stores, which in part explains why people who fast long term, with adequate body weight, stop getting hungry at some point.

    Also a few woos indicates disagreement. 10+ indicates someone struck a nerve hahaha.

  • Posts: 479 Member
    edited June 2019
    lemurcat2 wrote: »

    Fasting is not nutrition and from what I've seen for some it interferes with good nutrition.

    Does fasting occasionally have some benefits? Maybe, the jury is out.

    Is eating in a specific window daily beneficial vs. not, without regard to anything else? I've seen no convincing evidence of that, at all, and certainly nothing justifying this claim it's healthier and more important than other inputs (like nutrition).

    Certainly the current push for 8 hr or 6 hr or 4 hr eating windows isn't backed up by any traditional diets. Something like not eating when it's dark or occasional periods of short term fasts would be more consistent with historical practices.

    I get that shorter eating windows can make calorie control easier (I think for the same reason I like not snacking and skip breakfast when I plan a larger dinner), but claiming it's somehow superior or healthier is not supported. (And it's not actual fasting or some kind of ridiculous test of will. IMO, OMAD on a healthy diet would require gorging to a point I couldn't manage.)

    This is true. On maintainence, during exercise days, a healthy consumption for me will be over 2800. Eating that much food in a 6 hour window daily would be awful, especially with high protein goals. Egg whites are amongst the most protein dense foods, and I would have to have like 7 cups to just fit my protein. Or 7 cups of low fat cottage cheese. Or 8 chicken breasts. Or 9 protein shakes. Or 9 pork chops. 6 hours is not enough time.

    Great for losing weight, but could be prohibitively challenging later.
  • Posts: 479 Member
    NovusDies wrote: »

    It is so pervasive here to think that because something is superior for you that makes it superior for the next person. Some people thrive on 6 meals a day. I tried it years ago when I believed in the "keep the metabolism going" nonsense. As I recall I didn't even make it a week because I could not contain my hunger. I don't personally understand how eating more often helps one person and eating less often helps another (including me) but it doesn't matter. Everyone needs to find their own lane.

    Agreed! I mean there's a logic to all of these things. They all work, and they work for different reasons. If you can power through the 6 meal thing, maintaining your calorie goal, you're ensuring you don't increase the capacity of your stomach by a dramatic amount, as you would having larger meals. People who diet for a month or two will find that if they try to eat what they were before, they get full much quicker, and feel like bursting if they ate the same amount. Now if you make your meals even smaller and spread them out over a day, you're literally making it prohibitively difficult to binge eat. If you've been a volume eater all of your life, this can be a powerful tool. However, if you can't handle that mentally, it's not for you. I personally would much rather have 2 satisfying meals and some sort of decent dessert, with likely some added protein shakes in-between.
  • Posts: 7,887 Member
    I think the logic behind 6 mini meals or grazing (neither of which work for me) is that if you avoid ever getting hungry there's no tendency to overeat. I actually know a guy who is quite obese who tried dieting by skipping breakfast and lunch and then would overeat and not lose, so for him it would probably have been better to try smaller meals, who knows (this was before IFing was a thing).

    For me, larger meals are more satisfying (2 or 3, usually 3), and there's no risk of overeating because I know from habit what a reasonable size is, and I learned that by logging for a time. When I started logging my eyes would be bigger than my stomach (or my needs, since I tend to eat what's on my plate), but I'd trust the calorie counts I wanted would be sufficient and found they were.

    A lot of the common sense advice, both "eat lots of small meals" and "limit your consumption to a narrower eating window," as well as other things like "always eat breakfast" or "never eat after X:00" or "avoid high cal foods" are really just ways that sometimes work for people who aren't counting calories to reduce consumption easily. They only work to the extent they address why you tend to overeat, of course. For someone not hungry in the morning and hungrier after they eat, eating breakfast can be counterproductive. For people like me who find a bunch of small meals not satisfying and full meals much more so, grazing is a bad strategy. For people (also like me) who eat late because we get home late but only a balanced meal and not lots of uncontrolled snacking, the advice about not eating after a certain time is similarly useless, or even counterproductive (I'd be stuck worrying about eating dinner at all or trying to bring dinner to work).
  • Posts: 8,940 Member
    In addition to being excessively hungry 6 meals doesn't fit my personality. I find it tedious to plan so many meals even if some of them are snacks. I don't want or even like thinking about food that much. Less meals, or in my case one big meal, is less hassle. I get all of my nutritional needs over in a very large and filling meal. Other than having a snack later which is usually a few pieces of lunch meat and occasionally some chips I don't have to think about food again until tomorrow.

  • Posts: 257 Member
    I was diagnosed with diabetes in April and knew I did not want to take insulin. I started to do a bunch of research. I learned that I could lose weight safely and get my diabetes under control with my diet. I studied a bunch of topics on carbs, sugars, calorie intake, exercise, the failure of low fat diets, etc. I even talked with a dietitian.

    As I continued my research I came across Dr. Jason Fung. His books and videos confirmed what I learned in my research. He has written about fasting and the obesity epidemic and after reading his book it just all clicked for me. You can watch his video: https://www.youtube.com/watch?v=YpllomiDMX0

    I started out lowering my carb intake (as a carb addict this was a little difficult). I also had to learn what foods to eat-foods that I thought were really healthy ended up being heavy with carbs. It took me about two weeks to get this under control. My cravings decreased significantly. Over the next two weeks I worked on intermittent fasting (16 hours of not eating and eating three meals with-in an 8 hours window). I kept my calorie amount and my carbs in check. I lost about 9lbs. Then the next week I tried a 24 hour fast. I ate dinner, then did not eat again until dinner the next night. I thought it was going to be really hard but it ended up being easier than I thought. Dr. Fung details why you may get headaches, etc and what needs to be done to fix those issues. Since the fast went well a few days later I tried it again (he recommends 2 to 3 24 hr fast a week). I will now fast twice a week unless I hit a plateau.

    I also added exercise to my weekly routine. This was actually the hardest part for me. I hate exercising! I started by taking the dog for long walks. I set a routine and tried to do it faster each time. Now 7 weeks later I am at the pool twice a week for water aerobics and once a week for strength training. I also do yoga on Sundays with my daughter and try to take the dog for a walk 3 times a week.

    I have now lost 14 lbs and I am down a pants size. My last diabetes check was great.

    There are lots of different programs out there. I have probably been on most of them. This time I don't want it to be a diet. I want to make a lifestyle change so that I can be healthy for the rest of my life. This time I have taken my weight issues seriously- being diagnosed with diabetes will do that- and took the time to research the problem. I am never going to try the next fad diet, I am not even going to try what the govt program says to do because they have admitted that pushing the low fat diet was a major factor for the obesity problem. The facts are clear on how the body processes food and that is why I have changed my eating habits to eat, fast and exercise the way Dr. Fung suggests.

    Good luck everyone...
    Lisa

    @rvfamilyfour - congrats on finding a woe that works for you, losing 14lb and improving your markers.
  • Posts: 452 Member
    It's helping me break my addiction to food. That's why I do it.

    Bingo!!! This is me as well, I could literally eat from morning to bedtime easily, IF has really ingrained in me not eating after supper, it is such a habit now I don't even think about it anymore.

    Funny thing is about 15 years ago I used to work out faithfully early in the morning before work, not eat after supper and then just eat breakfast when I got to work (didn't know it was IF:))...ironically I weighed less then so IF for me just revitalized what I used to do and it seems to be working.

    Now I do not count calories and I lost 20 lbs last year doing IF hardcore now since winter I have kind of being looser with it and still have 10 lbs left to go which is coming off slowly (extremely slow) but whatever, even if I lost 1 lb. per month I am okay with that. I am not interested in doing hardcore "dieting" for sure.

  • Posts: 2,864 Member
    edited June 2019
    Assuming insulin level is low, fat stores can be tapped by the body. The body undergoes gluconeogenesis to create glucos from stored fat. Then the glucose is transformed into glycogen to replenish muscles and the liver, as well as to feed the brain.

    And yes, fat loss is dependent on being in a caloric deficit.
  • Posts: 8,940 Member
    Assuming insulin level is low, fat stores can be tapped by the body. The body undergoes gluconeogenesis to create glucos from stored fat. Then the glucose is transformed into glycogen to replenish muscles and the liver, as well as to feed the brain.

    And yes, fat loss is dependent on being in a caloric deficit.

    Fat stores will be tapped regardless of insulin levels if there is an energy deficit.

    The body creates glycogen from carbohydrates. If it does not then the now famous ketosis would never occur.
  • Posts: 2,864 Member
    edited June 2019
    If you're eating food, creating a rise in insulin, you're not in a deficit at the moment. The body will process the consumed food and cannot tap fat stores. Once insulin comes back down fat stores can be tapped if needed.

    Fat can become glucose via gluconeogenesis. Fat is not just turned to energy via ketosis. Then the glucose is converted into glycogen.
  • Posts: 2,864 Member
    mmapags, that's my point.
  • Posts: 2,864 Member
    And I'm not trying to play God with gluconeogenesis. I just know that I've experienced known side effects of gluconeogenesis after a protein-heavy breakfast when doing intense cardio later. I've tried fasted cardio to see if it results in the same side effects and I've had mixed results. Overall I'm just not sold on fasted cardio and I feel better off doing cardio after my typical breakfast. As we all know the calories burned matter above all else. Fasted cardio just hasn't been for me.
  • Posts: 38,439 MFP Moderator
    And I'm not trying to play God with gluconeogenesis. I just know that I've experienced known side effects of gluconeogenesis after a protein-heavy breakfast when doing intense cardio later. I've tried fasted cardio to see if it results in the same side effects and I've had mixed results. Overall I'm just not sold on fasted cardio and I feel better off doing cardio after my typical breakfast. As we all know the calories burned matter above all else. Fasted cardio just hasn't been for me.

    What side effects are there to GNG?

    Also, what kind of diet do you follow? Are you high carb, low carb, or in the middle?

    And to point out, unless you are eating carbrs literally all day, you are not in a "anabolic state" all day long. Many carbs will metabolize, especially when consumed in small amounts, withing an hour. If anything, evenly spreading protein would be more ideal due to mTOR activation. But even so, in a deficit, it won't be significantly different and your lifting protein would have much greater impacts on muscle building.
  • Posts: 2,864 Member
    psuLemon wrote: »

    What side effects are there to GNG?

    Also, what kind of diet do you follow? Are you high carb, low carb, or in the middle?

    And to point out, unless you are eating carbrs literally all day, you are not in a "anabolic state" all day long. Many carbs will metabolize, especially when consumed in small amounts, withing an hour. If anything, evenly spreading protein would be more ideal due to mTOR activation. But even so, in a deficit, it won't be significantly different and your lifting protein would have much greater impacts on muscle building.

    An ammonia smell to my sweat is a dead giveaway that I've strayed off into gluconeogenesis and am no longer burning immediately available glycogen. This begins about 30 minutes into my cardio, after muscle and liver glycogen stores have been depleted, and particularly if I have not fasted.

    When I am trying to lose weight I am strict low carb, low fat, high protein. When I reach my goal I bring up (healthy) fat but still tend to keep carbs relatively low (though I do work them in more frequently).
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