Formation of O2•− at complexes I and III primarily occurs in the mitochondrial matrix, but some of the O2•− produced at complex III is produced in the intermembrane space [63]. Within the matrix, O2•− is rapidly dismutated into hydrogen peroxide (H2O2) by manganese superoxide dismutase (SOD2) [41, 53]. Some O2•− may escape into the mitochondrial intermembrane space [64] and cytosol [65], where copper/zinc superoxide dismutase (SOD1) can dismutate it into H2O2 [41]. The large majority of mitochondrial H2O2 is removed by peroxiredoxin (Prx) 3, followed by much smaller contributions from Prx5 and glutathione peroxidases (GPx) 1 and 4 [66]. GPx also removes other peroxides, including lipid hydroperoxides [41]. Catalase is another antioxidant enzyme capable of removing H2O2 but is primarily located in peroxisomes and is therefore unlikely to directly remove mitochondrial H2O2 [41, 66]. However, H2O2 can be transported out of mitochondria [67], and it is possible that the majority of mitochondrial H2O2 is removed in the cytosol. Since Prxs and GPxs rely on NADPH for recycling of their cofactors (thioredoxins and glutathione, resp.) [41], and since NADH is required for recycling of NADPH [68], activity of these enzymes would decrease availability of NADH for oxidative phosphorylation. Therefore, transport of H2O2 out of mitochondria for removal in the cytosol may be a more likely defense mechanism [67], implying a more important role of catalase and other antioxidant enzymes outside of mitochondria. Despite the lower reactivity of H2O2, it is still reactive and can oxidize metal ions, particularly iron, to form the hydroxyl radical (•OH), which readily damages DNA, lipids, and proteins [41]. •OH is scavenged by metallothioneins I and II [69, 70] and glutatathione [71], indicating that these antioxidant proteins may be important defenses against byproducts of unaddressed mtROS. Other important antioxidant enzymes include glutamate-cysteine ligase (GCL), which is the rate-limiting step in glutathione synthesis, and glutathione reductase (GSR) and thioredoxin reductase (TRXR), which recycle glutathione and thioredoxin, respectively, to their reduced forms [41].

I was a Corpsman (not a corpse-man as some recent somewhat fanatical president would say), and I can tell you many stories of Marines and Sailors who maintained restrictive diets (aka picky eaters). Most obvious was lack of sustaining energy (hypoglycemia) at mile 15 (with 80lbs of gear including a 6.5lb rifle and 200 rnds of ammo, etc.) and depletion of essential vitamins, electrolyte imbalance. They were always the first to collapse and have to hear me scold “see I told you so.” An IV of D5W usually does the trick (D is for dextrose, OMG!)

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I love this recipe! Thanks for sharing, my 1st batch came out awesome, my 2nd batch, like others have described came out a bit dry and started breaking apart. So I added about a tablespoon of hot water at a time till I got the texture that I wanted and it didnt fall apart after I added a bit more water. This dough texture reminds me a lot of corn dough that is used to make tamales. So if you've made tamales this might be easy for you to make. I also took another user's advise and used a corn tortilla press, that made spreading it an easy. Definitely a redo. Already made 2 batches one with chorizo and egg the other with pepperoni, marinara and cheese and the kids love them!
The sausage for this keto breakfast sandwich is pretty straight forward.  I used half a pound of store bought breakfast sausage.  I formed it into 2 patties and cooked them in my cast iron skillet.  Cook it on medium-high heat and don’t touch it until it forms a crust.  Try to ignore the splatters all over the stovetop, unless you’re OCD like me and you wipe it away while everything is still cooking.  Then wipe again, and again.

thanks for your reply, maria! i can’t figure out why mine tastes so vinegar-y while no one else has had this problem. could it be the type of vinegar i’m using? It’s trader joe’s organic ACV. could i just reduce the amount of vinegar? or, in your baking experience, do you think i could i use lemon juice as the acid in place of the vinegar (or a mix of the two)? i think i could stand a lemon taste better than a vinegar taste…
One of the hardest things to do when I travel is to find something to take for lunch OTHER than salads–that gets old fast! This will be a HUGE help so that I can add “bread” back into my lunch menus! Thank you VERY much! So fast, so easy, and VERY usable for those of us stuck in hotel rooms with limited options for eating in. It really does have the texture of whole-grain type of bread!! You’re a life saver! 😀
There are many long-term benefits of being in ketosis. The benefit that is most important for many people is fat loss. Following the ketogenic diet even helps you to reduce the otherwise hard to lose belly fat. The primary reason why it is easy to lose excess fat on a ketogenic diet is the normalization of appetite. You don’t feel the need to overeat, day in and day out. Most people find it easy to lose weight on a ketogenic diet, even morbidly obese people that have tried failed on multiple other diets.
As will be discussed in the following sections, many of the signaling proteins involved in regulating antioxidant defense also regulate oxidative phosphorylation and fat oxidation. There is abundant evidence (Table 1) showing ketogenic and low-carbohydrate diets to increase expression, content, or activity of many targets of these signaling proteins, further indicating increased oxidative capacity. It is particularly striking that ketogenic or low-carbohydrate diets upregulate expression of proteins associated with each of the five mtETC complexes.
The metabolic syndrome can be induced by overfeeding with sugar or fructose, particularly concomitantly with high-fat diet.[36] The resulting oversupply of omega-6 fatty acids, particularly arachidonic acid (AA), is an important factor in the pathogenesis of metabolic syndrome.[medical citation needed] Arachidonic acid (with its precursor – linoleic acid) serve as a substrate to the production of inflammatory mediators known as eicosanoids, whereas the arachidonic acid-containing compound diacylglycerol (DAG) is a precursor to the endocannabinoid 2-arachidonoylglycerol (2-AG) while fatty acid amide hydrolase (FAAH) mediates the metabolism of anandamide into arachidonic acid.[37][35] Anandamide can also be produced from N-acylphosphatidylethanolamine via several pathways.[35] Anandamide and 2-AG can also be hydrolized into arachidonic acid, potentially leading to increased eicosanoid synthesis.[35]

188. Tomas E., Tsao T. S., Saha A. K., et al. Enhanced muscle fat oxidation and glucose transport by ACRP30 globular domain: acetyl-CoA carboxylase inhibition and AMP-activated protein kinase activation. Proceedings of the National Academy of Sciences. 2002;99(25):16309–16313. doi: 10.1073/pnas.222657499. [PMC free article] [PubMed] [CrossRef] [Google Scholar]

Whey protein isolate. This one is pretty much a must if you’re baking the bread in a pan (say as opposed to muffins), as it will ensure your bread doesn’t collapse post-bake. Having said that, you can sub it with more almond flour and bake it in a muffin pan (smaller baked goods have don’t require as much structure). Not exactly the same, but works well.
With the recent research findings, and the increasing availability of exogenous ketones, it is unsurprising that some authors have said (with a hint of skepticism) that they “could be the next magic bullet’ for athletes39. More research is required to understand the best use cases, doseage protocols, compounds etc, however it is clear that exogenous ketones are a new ‘tool’ in the athlete’s arsenal that can be used to provide an alternative, energetically favourable fuel source without needing dietary manipulation. 
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One of the hardest things to do when I travel is to find something to take for lunch OTHER than salads–that gets old fast! This will be a HUGE help so that I can add “bread” back into my lunch menus! Thank you VERY much! So fast, so easy, and VERY usable for those of us stuck in hotel rooms with limited options for eating in. It really does have the texture of whole-grain type of bread!! You’re a life saver! 😀
Oh Maria! Your bread recipe is fabulous! I have been playing around with it a little because the psyllium was a little too much for my gut! Went to 8 TBS of psyllium and added 2 TBS of Jay Robb Protein Isolate powder and a little sweetener (trying to make a yeasty flavor) I also turned it into buns which are easier for my household. I must say they turned out great! I even added caraway seeds to one batch for a rye flavor! I cannot thank you enough for making it so much easier to eat right when you have BREAD, ROLLS and DESSERTS that are fabulous!
As described throughout the previous sections, there are many instances of codependencies and feed-forward loops in bioenergetic and antioxidant signal transduction, which supports the well-known potential for metabolic stimuli, such as diet or exercise, to have a profound physiological influence. Given the central role of mitochondria in oxidative phosphorylation and ROS production, the overlap between bioenergetic and antioxidant signaling is not surprising and is possibly an outcome of evolution favoring efficiency. PGC-1α is at the center of this overlapping and complex network of codependencies. The likely role of PGC-1α as a coactivator of FOXO3a indicates a possible dependence of FOXO3a transcriptional activity on PGC-1α [287], indicating FOXO3a as a central mediator as well. Furthermore, FOXO3a induces transcription of PGC-1α [287, 322, 367], and formation and antioxidant transcriptional activity of the PGC-1α-FOXO3a complex are partly dependent on interaction with SIRT1 [325]. In muscle, expression of many of the bioenergetic and antioxidant proteins previously discussed is dependent on PGC-1α [265]. Upstream, activation of PGC-1α is dependent on AMPK [242] and SIRT1 [242, 269] and partly dependent on SIRT3 [270]. Furthermore, activation of SIRT1 is dependent on AMPK [242], which may also be the case for SIRT3. AMPK and PGC-1α are therefore two key factors, with critical supporting roles of the sirtuins, in the signal transduction linking bioenergetics to antioxidant defense. Further supporting the relevance of this linkage to nutritional ketosis, expression of AMPK, SIRT1, FOXO3a, and NFE2L2 is required for extension of lifespan in C. elegans by exogenous BHB [95], and expression of AMPK, p38 MAPK, and NFE2L2 is required for the extension of lifespan, also in C. elegans, by mitohormesis induced through inhibition of glucose metabolism [73]. The induction of AMPK [259, 260], SIRT3 [263, 329], p38 MAPK [310–313], PGC-1α [76, 77, 260, 282, 283], FOXO3a [324, 331, 333], and NFE2L2 [358–360] activity by oxidative stress also makes this signaling highly relevant to mitohormesis [263, 282, 360], especially given that activation of these proteins has been shown to decrease mitochondrial or cellular ROS [76, 263, 282, 289, 323, 332, 334, 356, 359, 367]. Furthermore, mitochondrial biogenesis [346] and the activities of AMPK [259, 260], SIRT3 [329], p38 MAPK [311, 312], PGC-1α [76, 77, 260, 283], FOXO3a [324], and NFE2L2 [368] are increased by H2O2, more specifically associating this signaling with mitohormesis. Given that AMPK and sirtuins are upstream of the majority of this signaling and that AMPK and sirtuin activities are stimulated by both bioenergetic and oxidative stressors, these stressors are likely the primary signals through which nutritional ketosis may induce the mitochondrial and antioxidant adaptations characteristic of mitohormesis (Figure 2).
This savory frittata recipe by Ketogasm is loaded with nutrients to power your day.It’s hearty and filling, without taking you past your carb limit. Each serving has 333 calories, 26 grams of fat, 20 grams of protein, and only 1 net gram of carbs. This bloggers uses spinach, mushroom and uncured sausage, but feel free to play around with your veggies or swap sausage for chicken or steak.
In skeletal muscle, impaired mitochondrial function contributes to age-associated atrophy, impaired contraction, and insulin resistance [2]. While exercise provides a direct stimulus for mitochondrial adaptation in muscle, with great potential to prevent or treat the aforementioned conditions, the global effects of exercise on bioenergetic homeostasis may lead to mitochondrial adaptations in other tissues as well. Based on this, exercise has the potential to influence any condition for which impairments in global energy metabolism or local mitochondrial function are a contributing factor, which is arguably the case for a majority of chronic diseases. Exercise is therefore an excellent adjunct to nutritional ketosis because it facilitates β-oxidation and ketogenesis by increasing energy demand and depleting glycogen storage, which is likely to augment the signaling induced by nutritional ketosis.

Fantastic! So easy to make. Not sure if I didn’t mix mine well enough, but it had a couple of “air holes” in it after baking. Did not matter…tastes great. I made a grilled cheese out of two of the slices…delicious! I can’t wait to try some of the ideas from the comments: adding herbs and/or spices, adding cinnamon and stevia, etc. Seems the possibilities are endless.

This “lazy” keto bread recipe is anything but boring: Crumbling the butter directly into the dough creates moist and tender biscuits for all your sweet and savory recipes. Plus, this recipe takes 30 minutes from start to finish and keeps each biscuit macro-friendly at 3 net carbs. Stay more Bulletproof and use the sour cream and whey protein swaps suggested in the recipe, plus avoid eating flaxseed too often.

Hi Melissa, Are you beating the whole eggs? It needs to be egg whites only. Whole eggs will never form peaks. Adding a little cream of tartar helps, as well as making sure you start with a very clean bowl (preferably not plastic if you’re having issues). Having the egg whites at room temperature can be a little easier, too, though I usually don’t need to. Hope this answers your question!

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Metabolic syndrome is a cluster of metabolic risk factors that come together in a single individual. These metabolic factors include insulin resistance, hypertension (high blood pressure), cholesterol abnormalities, and an increased risk for blood clotting. Affected individuals are most often overweight or obese. An association between certain metabolic disorders and cardiovascular disease has been known since the 1940s.

Brittany, Thank you so much for leaving a comment! Without being there in the kitchen with you, it’s difficult to say what the issue was; however, I can definitely help you troubleshoot…did you cook it for the full amount of time the recipe calls for, and did you cover the top with foil for the last 15 minutes? If so, there might be an issue with your oven’s calibration (you can get an inexpensive oven thermometer to check this). Another tip is to let your eggs come to room temperature first. Another factor is the altitude at which you’re baking; if you’re at high altitude, you might need to slightly adjust the oven temperature and bake time. The other thing to remember is that there will usually be a little bit of fall to most keto breads (in fact, every keto bread we’ve ever made) because keto flours lack gluten and are naturally quite dense; however, you can see in the photos, we still got a good rise on this loaf. I hope these tips help!