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Methionine/Cysteine restriction increases longetivity AND energy expenditure

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  • M
    Mauritio
    last edited by Mauritio Apr 28, 2024, 10:14 AM Apr 28, 2024, 9:44 AM

    @Kasper said in Methionine/Cysteine restriction increases longetivity AND energy expenditure:

    FGF21

    FGF21

    The benefits of MR are almost exclusviely downstream from FGF21. ("...mice lacking FGF21 fail to exhibit metabolic responses to protein restriction...")
    https://pubmed.ncbi.nlm.nih.gov/35393401/
    Interestingly FGF21 fails to have effects when the longevity gene klotho is silenced, so FGF21's effects seem to depend on klotho.
    https://pubmed.ncbi.nlm.nih.gov/23209629/

    • Ketogenic diets decrease FGF21 (and klotho) as per this study, so they are not good for replicating MR
      https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4431718/

    • Low protein diet increases FGF21 more, but high protein diet decreases liver fat more
      https://raypeatforum.com/community/threads/high-protein-diet-reduces-hepatic-fat-than-low-protein-diet.35461/

    • Low carb, high protein diet decreased FGF21 by 54%
      https://pubmed.ncbi.nlm.nih.gov/38379856/

    • Molecular hydrogen increases FGF21
      https://pubmed.ncbi.nlm.nih.gov/21293445/

    • high sucrose diet increases FGF21
      https://pubmed.ncbi.nlm.nih.gov/28886439/

    • Concentric exercise, in this case, treadmill uphill walk variations, increase FGF21 by 66% in 2 weeks in humans
      https://pubmed.ncbi.nlm.nih.gov/22701542/

    Dare to think.

    My X:
    x.com/Metabolicmonstr

    M 1 Reply Last reply May 9, 2024, 12:54 PM Reply Quote 0
    • M
      Mauritio
      last edited by Mauritio Apr 28, 2024, 10:14 AM Apr 28, 2024, 10:11 AM

      Wow.

      "...MRD (0.17% methionine + 1.20% choline) for 90 consecutive days. We found that MRD reduced body weight and fat mass; increased heat production and ambulatory locomotor activity; reduced hepatic and plasma lipid levels, hepatic fatty infiltration area, and adipocyte volume in white and brown adipose tissue; promoted fat browning, especially upregulated gene and protein expression levels of uncoupling protein 1 (UCP1); and promoted fat catabolism and inhibited fat anabolism in the liver and adipose tissue. Moreover, MRD increased antioxidant defenses and reduced inflammatory cytokine levels in the thyroid, blood, and liver. Furthermore, # MRD improved thyroid morphological structure, promoted the synthesis and secretion of thyroid hormones, and enhanced the actions of thyroid hormones on its receptor organs (liver and adipose tissue). These findings suggested that MRD promoted fat browning and attenuated hepatic lipid accumulation in HCD mice associated with the improvement of thyroid function."

      images_medium_jf2c05535_0011.gif

      • https://pubs.acs.org/doi/10.1021/acs.jafc.2c05535#

      Dare to think.

      My X:
      x.com/Metabolicmonstr

      1 Reply Last reply Reply Quote 0
      • E
        evan.hinkle @Benjo
        last edited by Apr 28, 2024, 2:12 PM

        @Benjo this is what I’m always curious about. It seems like it would be tough to construct a diet low in methionine, while hitting key macros/micros, but maybe it’s as simple as the rice diet three days a week? Despite the name, patients on the rice diet ate fruit, juice, and sugar in addition to the rice, (and I have a personal theory that you could add butter to the rice and still have it work-just to make it a little more palatable).

        B 1 Reply Last reply Apr 28, 2024, 8:10 PM Reply Quote 0
        • M
          Mauritio
          last edited by Mauritio Apr 28, 2024, 2:55 PM Apr 28, 2024, 2:54 PM

          Protein restriction might be the best option to increase FGF21 and thus longevity, but not the easiest. Something that everybody can do at home and that Peat had recommended for decades is to eat lots of carbs.

          This human study shows that Increasing carb intake is way more effective at increasing FGF21 than incresaing fat intake.
          The protein intake was the same during the whole study.

          The FGF21 concentration increased 8-fold in the high carb group!

          "After CHO, plasma FGF21 concentration increased 8-fold compared to CON (329 Β± 99 vs. 39 Β± 9 pg ml-1, p < 0.05)."

          So protein restriction might not even be necessary.

          1ff2a530-5d27-42e5-b325-7025e4fc663a-image.png

          Another interesting fun fact is that the high carb diet increased the concentration of palmitoleic acid by almost 150%. Its interesting that when the body makes new fat that it is a pro-metabolic MUFA. Palmitoelic acid is contained in macadamia nuts a lot.

          • https://pubmed.ncbi.nlm.nih.gov/28123934/

          Dare to think.

          My X:
          x.com/Metabolicmonstr

          M 1 Reply Last reply Jun 27, 2025, 4:06 PM Reply Quote 0
          • M
            Mauritio
            last edited by Mauritio Apr 28, 2024, 3:07 PM Apr 28, 2024, 3:04 PM

            I always suspected there was more to semaglutide than it lowering appetite.

            It increases FGF21 sensitivity. So in a way it is mimicking methionine restriction.

            In many diseases FGF21 is high (I assume as an adaptive response), but similarly as in diabetes and insulin, their body is resistant to it. So there is such a thing as FGF21 resistance, which is ameliorated by semaglutide, leading to weight loss.

            • https://pubmed.ncbi.nlm.nih.gov/36905134/

            • https://pubmed.ncbi.nlm.nih.gov/28525362/

            Dare to think.

            My X:
            x.com/Metabolicmonstr

            E 1 Reply Last reply Apr 28, 2024, 3:10 PM Reply Quote 0
            • E
              Ecstatic_Hamster
              last edited by Apr 28, 2024, 3:08 PM

              This is a plant based diet. It is low in methionine. Not zero, but low compared to adding animal products.

              1 Reply Last reply Reply Quote 0
              • E
                Ecstatic_Hamster @Mauritio
                last edited by Apr 28, 2024, 3:10 PM

                @Mauritio great find, thank you!!

                1 Reply Last reply Reply Quote 0
                • M
                  Mauritio
                  last edited by Apr 28, 2024, 3:10 PM

                  T3 increases FGF21 as well.
                  https://pubmed.ncbi.nlm.nih.gov/20236931/

                  Dare to think.

                  My X:
                  x.com/Metabolicmonstr

                  1 Reply Last reply Reply Quote 0
                  • B
                    Benjo @evan.hinkle
                    last edited by Apr 28, 2024, 8:10 PM

                    @evan-hinkle you might be right regarding the rice diet. Rice does have protein, of course. But if the diet included plenty of fruit and sugar, and maybe coconut oil or butter, the percent of methionine could be low enough. Cronometer is reasonably helpful crunching those ratios.

                    Brad Marshall of fireinabottle and the old croissant diet of a couple years ago has been doing something similar, except he's focusing on the branch chain amino acids (valine, leucine, and isoleucine) instead of methionine. He's also more into starch, so he's doing casava pancakes and sweet potato rice noodles (which have zero protein and virtually no nutrients.)

                    OJ is an easy base for the diet because of the nutrient values (considerable in a whole gallon) but that much liquid could be a turn-off.

                    I've been dabbling with this idea for a couple days. It's hard for me to drink morning coffee without milk. I may go back to using cream or even coconut cream and see how it feels.

                    I'd love to hear anyone's experience/success trying this.

                    D 1 Reply Last reply Apr 28, 2024, 9:12 PM Reply Quote 0
                    • D
                      DavidPS @Benjo
                      last edited by Apr 28, 2024, 9:12 PM

                      @Benjo - I have been leaning into a lower methionine diet for several months. I keep methionine below 1 gram/day and my cysteine is in the same ballpark. It is very doable for me. I do not obsess about getting my methionine closer to zero.

                      I typically get most of my calories from white rice, lentils and sweet potatoes. If you look to epidemiological studies, billions of Chinese have lived on a rice based diet for generations. The traditional Okinawan diet was based on sweet potatoes.

                      I am a full-grown male and I am not concerned about stunting my growth. I have an inexpensive bioimpedance scale that I purchased years ago. It montiors about 10 different things and I pay attention my muscle weight and bone weight to make sure I am doing no harm to myself.

                      You can catch more flies with honey than vinegar. πŸ‘€
                      β˜‚οΈ

                      N 1 Reply Last reply Nov 27, 2024, 9:00 PM Reply Quote 0
                      • E
                        evan.hinkle
                        last edited by Apr 29, 2024, 4:07 PM

                        I used to do juice fasting when I first tried to fix my thyroid. At the time I drank juices that had a ton of veggies in them, but you could easily swap that out for predominantly fruity juices.

                        If one really only needs to restrict methionine for 3 days a week, perhaps three single day juice days, (non-consecutive) a week would be another method. I always found juices very satiating, (you would think they wouldn’t be, but they are pretty dense).

                        I’m just trying to come up with as many example diets as possible, and hoping that you all can poke holes in them for me.

                        1 Reply Last reply Reply Quote 0
                        • P
                          PrometheanAngel
                          last edited by Apr 30, 2024, 6:45 AM

                          I'm skeptical of NAC supplementation for this reason, as well as for the fact that NAC supplementation does not raise glutathione levels except in acute cases of stark depletion

                          1 Reply Last reply Reply Quote 0
                          • D
                            DavidPS
                            last edited by DavidPS Apr 30, 2024, 12:05 PM Apr 30, 2024, 12:00 PM

                            My diet includes about 10 grams of glycine each day. I add glycine in part to try to reduce the negative effects of glyphosate that is sprayed on our commerically produced foods. Glycine also helps with reducing the impact of methionine.

                            Balancing Methionine and Glycine in Foods: The Database

                            You can catch more flies with honey than vinegar. πŸ‘€
                            β˜‚οΈ

                            1 Reply Last reply Reply Quote 0
                            • M
                              Mauritio @Mauritio
                              last edited by May 9, 2024, 12:54 PM

                              @Mauritio said in Methionine/Cysteine restriction increases longetivity AND energy expenditure:

                              Concentric exercise, in this case, treadmill uphill walk variations, increase FGF21 by 66% in 2 weeks in humans
                              https://pubmed.ncbi.nlm.nih.gov/22701542/

                              Interestingly upstairs walking, a form a concentric exercise, has by far the highest calorie expenditure amongst all the sports tested.

                              https://x.com/T3MaxxiAlt/status/1759793246769987880

                              BTW if anyone finds any other ways to boost FGF22 let me know. I feel like boosting FGF22 is a better way key to get the benefits of MR without having to eat in a too restricted way.
                              I think methionine restriction boosts FGF22 something like 800% and I have yet to find anything else that comes even close to that .

                              Dare to think.

                              My X:
                              x.com/Metabolicmonstr

                              D 1 Reply Last reply May 9, 2024, 2:47 PM Reply Quote 0
                              • D
                                DavidPS
                                last edited by May 9, 2024, 2:12 PM

                                My diet includes a large amount of glycine. Yesterday I entered my food into cronometer.com and my methionine:glycine ratio was about 1:10. I suspect that the effect from low methionine and the effect of high glycine are additive. From 2023:

                                Glycine and aging: Evidence and mechanisms

                                Highlights
                                β€’ The simple amino acid glycine extends lifespan in worms, mice, and rats.

                                β€’ Glycine also improves aspects of health in mammalian models of age-related disease.

                                β€’ Glycine is the acceptor for GNMT, an enzyme responsible for methionine clearance.

                                β€’ GNMT also converts glycine to sarcosine, an autophagy-inducing metabolite.

                                β€’ Glycine may prolong life by inducing autophagy and mimicking methionine restriction.

                                You can catch more flies with honey than vinegar. πŸ‘€
                                β˜‚οΈ

                                M 1 Reply Last reply May 10, 2024, 4:26 PM Reply Quote 0
                                • D
                                  DavidPS @Mauritio
                                  last edited by May 9, 2024, 2:47 PM

                                  @Mauritio - This 10-minute YouTube video was posted 3 days ago and it suggests ways to increase FGF21. I am thinking that they are all additive.

                                  FGF21 A Systemic Enhancer of Longevity

                                  You can catch more flies with honey than vinegar. πŸ‘€
                                  β˜‚οΈ

                                  1 Reply Last reply Reply Quote 0
                                  • M
                                    Mauritio @DavidPS
                                    last edited by May 10, 2024, 4:26 PM

                                    @DavidPS said in Methionine/Cysteine restriction increases longetivity AND energy expenditure:

                                    My diet includes a large amount of glycine. Yesterday I entered my food into cronometer.com and my methionine:glycine ratio was about 1:10. I suspect that the effect from low methionine and the effect of high glycine are additive. From 2023:

                                    Glycine and aging: Evidence and mechanisms

                                    Highlights
                                    β€’ The simple amino acid glycine extends lifespan in worms, mice, and rats.

                                    β€’ Glycine also improves aspects of health in mammalian models of age-related disease.

                                    β€’ Glycine is the acceptor for GNMT, an enzyme responsible for methionine clearance.

                                    β€’ GNMT also converts glycine to sarcosine, an autophagy-inducing metabolite.

                                    β€’ Glycine may prolong life by inducing autophagy and mimicking methionine restriction.

                                    Thanks πŸ™πŸ»
                                    Wasn't the increase in longevity from glycine "only" about 8%? That's quite far from MR which achieved between 30-40%. So this suggests that glycine isn't enough to mimic MR.

                                    Dare to think.

                                    My X:
                                    x.com/Metabolicmonstr

                                    D 1 Reply Last reply May 10, 2024, 7:15 PM Reply Quote 0
                                    • D
                                      DavidPS @Mauritio
                                      last edited by DavidPS May 10, 2024, 7:39 PM May 10, 2024, 7:15 PM

                                      @Mauritio - I apologize for the confusion. I agree that MR is superior to glycine for longevity. MR also has benefits for starving cancer.

                                      e60502ce-7f9b-47f8-bebf-516164c55247-image.png

                                      As you can see, the greatest source of methionine comes from foods of animal origin, especially chicken and fish. I am unwilling to adopt a diet based solely on plant foods and I use glycine to balance the methionine in my diet (after I have reduced it to an level that I still find appetizing).

                                      You can catch more flies with honey than vinegar. πŸ‘€
                                      β˜‚οΈ

                                      M Y 2 Replies Last reply May 10, 2024, 7:31 PM Reply Quote 0
                                      • M
                                        Mauritio @DavidPS
                                        last edited by Mauritio May 10, 2024, 8:46 PM May 10, 2024, 7:31 PM

                                        @DavidPS
                                        Sorry for the confusion as well.
                                        The 800% increase in FGF21 was actually from the high carb diet. And as the person in the video you posted explained, they ate pasta, bread, corn and drank juices.

                                        Im going to look into that study more, mainly because it is a human study and the increase was so high.
                                        Now compare that to the low protein study (also in humans) and they only had a 150% increase after 4 weeks.

                                        So it seems high carb is more important than low protein!

                                        Dare to think.

                                        My X:
                                        x.com/Metabolicmonstr

                                        M 1 Reply Last reply May 10, 2024, 8:16 PM Reply Quote 0
                                        • M
                                          Mauritio @Mauritio
                                          last edited by Mauritio May 10, 2024, 8:21 PM May 10, 2024, 8:16 PM

                                          @Mauritio said in Methionine/Cysteine restriction increases longetivity AND energy expenditure:

                                          @DavidPS
                                          Sorry for the confusion as well.
                                          The 800% increase in FGF21 was actually from the high carb diet. And as the person in the video you posted explained, they ate pasta, bread, corn and drank juices.

                                          Im going to look into that study more, mainly because it is human and the increase is so high.
                                          Now compare that to the low protein study (also in humans) and they only had a 150% increase after 4 weeks.

                                          So it seems high carb is more important than low protein!

                                          This is actually an excellent study. Aswers a lot of questions.

                                          Again: high carb, seems more important than low protein. And low fat (PUFA) is important, too.

                                          They used the following diets:
                                          High carb: (80 E% carbohydrate, 11 E% protein, 9 E% fat)
                                          High fat: (10 E% carbohydrate, 12 E% protein, 78 E% fat)
                                          Control: (62 E% carbohydrates, 14 E% protein, 24 E% fat)

                                          The dfference in FGF21 between high carb and control is massive, yet the control group also ate a lot of carbs and the protein was almost the same, so the only factor that strongly differs is the fat content, which is 2,5 times higher in the control diet.
                                          Leading me to believe that this is crucial as well: high carb AND low fat. If it was only the carbs than the control diet should have outperformed the high fat diet ,which it didn't.

                                          This underlines what Peat said for a long time that: a high carb, low/medium protein, low fat is very healthy.
                                          I think you can go higher on protein if it is gelatin. And maybe higher on fat if it is SFA ? Im going to look into the realtionship between SFA and FGF21.

                                          Another thing we should look into is all the protein restriction animal studies.
                                          Are they really low protein studies ? Or high carb,low protein?What is the diet of the control groups in these studies?

                                          Btw fasting is not effective in humand to boost FGF21: "...an increase in circulating FGF21 concentration is not detected until after 7–10 days of starvation in humans ..."

                                          69549676-e366-4b88-a2e4-7717e54b348d-image.png

                                          • https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5220397/

                                          Dare to think.

                                          My X:
                                          x.com/Metabolicmonstr

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