C8 is the rarest MCT found in coconut oil, comprising about 6% of coconut oil. It has potent anti-microbial properties (way more potent than lauric acid) to help you maintain a healthy gut, and it is the fastest MCT to metabolize in the brain. (hence the name Brain Octane). Your liver does not need to process C8, and it only takes the steps for your body to turn it into ATP cellular energy (sugar takes 26 steps). You would need 18 tablespoons of coconut oil to get just one tablespoon of Brain Octane.
For dinner, I stick to a spinach salad, topped with two hardboiled eggs, two pieces of bacon, an avocado, 4 oz. of chicken and some sunflowers seeds. I top it with ranch. I’ll have a couple fat bombs and some pecans. That’s very basic, but I don’t like to get too crazy with the meals. I’ll track all my meals the day before then I’ll prep it on Sunday and eat it for the rest of the week. 
This is a great post and very informative. I have been following a keto diet now for almost 3 mths. I have only lost 8 pounds but lost all my bloating and lost lots of inches. I have severe IBS and fear eating anything outside of my own home and bathroom. Since on keto diet that has all gone away and I have no fear anymore!!! I know keto isn’t for everyone and I want to lose more weight but I will give up the weight loss to have my IBS corrected any day!!
But while carbohydrates can help you have a better workout, go faster, or go longer, this only applies to acute, in-the-moment performance. Once you take a look (which you’re about to do) at the long-term effects of chronic high blood sugar levels, things change drastically. If the damage that you’re above to discover is worth it to you, then you are either mildly masochistic or you value performance much more than health.

Even though intracellular metabolism and activation of the ATP-sensitive K+ channels appear to be necessary for some signaling effects of FAs, a great amount of the FA responses in the ventromedial hypothalamic neurons are mediated by interactions with fatty acid translocase (FAT)/CD36. Translocase is a FA transporter/receptor that activates downstream signaling even in the absence of intracellular metabolism (Moulle et al., 2014).
Ideally, you combine supplemental ketones with a relatively low carb diet, especially if metabolic efficeincy is important to you. HOWEVER, you can achieve most of the benefits of ketosis aside from the fat burning efficiency by using exogenous ketones. So it all depends on how lean you are, what's important to you from a performance vs. fat loss standpoint, etc.
There are many ways in which epilepsy occurs. Examples of pathological physiology include: unusual excitatory connections within the neuronal network of the brain; abnormal neuron structure leading to altered current flow; decreased inhibitory neurotransmitter synthesis; ineffective receptors for inhibitory neurotransmitters; insufficient breakdown of excitatory neurotransmitters leading to excess; immature synapse development; and impaired function of ionic channels.[7]

This article really bothers me in that if you do a few incorrect things with this diet, it will actually do more harm than a full carb diet. I have been in ketosis for a month or so but to what detriment? Based on the “ketosis darkside” list you highlighted, i could be doing any or all of these without realising. Could i share with you my meal plans and see if in your opinion they are beneficial and healthy or if im digging myself an early grave?
The state of ketosis occurs when ketone bodies, which are actually three biochemicals -- acetone, acetoacetic acid and beta-hydroxybutyric acid -- build up in your bloodstream. Your body needs carbohydrates to fully break down fat, so a lack of carbohydrates in your diet leads to ketosis. It is normal for the body to produce small amounts of ketone bodies, but when placed in a state of starvation, the liver produces ketone bodies from fatty acids to nourish essential organs like the brain and heart. The excess acetone is excreted in the urine and producing the characteristic sweet breath often found in diabetics
That makes total sense for me too as I’m 65 and doing low carb the same way. My sugar and cholesterol are doing much better. Keeping the carbs lower stops me from going nuts on carbs later. I don’t consume so many fats as they recommend but enough to keep me happy. If I go out for a noodle bowl with friends I totally enjoy it and then get back on the wagon . Life is too short to get to obsessed about every macro. Never thought I could go without a potato every supper but here I am finding other great veggies to make up for it. Even have beans or a bit of fruit once in awhile just not too crazy with the helpings. I’m pretty proud of my self for sticking with this way of eating for over a year now. I feel better and that is what counts.

The modified Atkins diet reduces seizure frequency by more than 50% in 43% of patients who try it and by more than 90% in 27% of patients.[3] Few adverse effects have been reported, though cholesterol is increased and the diet has not been studied long term.[47] Although based on a smaller data set (126 adults and children from 11 studies over five centres), these results from 2009 compare favourably with the traditional ketogenic diet.[3]
We now know the ketogenic diet has many other therapeutic benefits. One of them being that it trains the body to burn fat (in place of sugar) for fuel making the ketogenic diet an excellent choice for weight loss and improvement in body composition. The ketogenic diet is also excellent at treating and preventing insulin resistance like as found in type 2 diabetes and can even lower diabetic medication dosage or even prevent one’s need for blood sugar lowering medication. Weight loss through a ketogenic diet can also help lower cholesterol and triglycerides and improve overall cardiovascular function as well.

First I would like to say I am on keto, but appreciated this article. I am a person who has seen major health benefits from eating this way and would like to point out a few things. First no matter what diet you do, none will be perfect. Second a way of eating should be chosen based on your body’s needs. Finally third if you follow a diet be sure you’re following it well and looking for authors that back what they write with scientific evidence. For keto 2 of those are Maria & Craig Emmerich and Leanne Vogel. To the woman above asking for advice I have to say I don’t feel for keto that you are getting enough fats based on what you wrote in your post. The best all I’ve found is carb manager. It is an all you have to pay for, but it really helps with tracking. I personally have found nearly the opposite of most of the issues that the author has, but I also more than likely have different body chemistry. I have PCOS and have a lot of issues with menstruation, insulin resistance, metabolic issues, thyroid dysfunction, and extreme hormonal imbalances, and morbid obesity. This change to my diet has honestly changed my life. I’ve been watching my PCOS symptoms improve or disappear over the last year. I’ve lost 65 lbs and have for literally the first time in my life a normal natural cycle without hormone therapy. So I would say check out your body’s needs and see if this diet is right for you, but also read material from Maria Emmerich and Leanne Vogel. There is so much incorrect information out there on this diet and I just feel getting good information can help anyone make the right decision.for them. I hope no one sees this as an attack. I simply wanted to respond with my experience as well.
Shifting your metabolism and achieving ketosis may speed up weight loss and result in other health benefits, like more energy and a lower blood pressure. But while ketosis is a preferred nutritional state for some people, it isn’t recommended for everyone — and it’s not a good long-term eating approach due to its restrictive nature, which may lead to potentially dangerous nutritional deficiencies.

In the beginning of the study, all participants were instructed to consume either ≤20 g of fat (if in the low-fat group) or ≤20 g of carbs (if in the low-carb group) for the first two months, after which they could increase either their fat or carb intake to levels they felt they could sustain indefinitely. By the end of the trial, the vast majority had not been able to maintain such low levels. The final dietary recalls reported an average daily fat intake of ≈57 g (low-fat group) and an average daily carb intake of ≈132 g (low-carb group).

This is a great post and very informative. I have been following a keto diet now for almost 3 mths. I have only lost 8 pounds but lost all my bloating and lost lots of inches. I have severe IBS and fear eating anything outside of my own home and bathroom. Since on keto diet that has all gone away and I have no fear anymore!!! I know keto isn’t for everyone and I want to lose more weight but I will give up the weight loss to have my IBS corrected any day!!
The handheld devices that are available for home testing (such as FreeStyle by Abbott, or KetoMojo) require a small droplet of blood (obtained by a finger prick with a lancet) to be placed on a testing strip. A new testing strip must be used each time a reading is taken. The machine delivers a numerical blood BHB measurement in the unit milli molar (mM) after ~8 seconds. 
"I'm not obsessed with food anymore. Before keto, I was constantly hungry and thinking about food. If we got takeout, I would open all of the containers to see which one had the most in it and I would grab that one. It makes sense now because everything I was eating was full of sugar and carbs and I was in that vicious cycle. Growing up, if we had a bad day my dad would say, "Let’s go get some ice cream." He wasn’t trying to raise a food addict.
The results in body fat percentage lost was even more striking. The average body mass percentage decreased by 2.9% in the Atkins diet group. In contrast, it decreased by 1.5% in the Ornish diet group, by 1.3% in the Zone diet group, and 1.0% in the LEARN diet group. [16] This means that subjects in the Atkins diets decreased their average body fat percentage at least twice of any other group- including those eating the low-fat, high carbohydrate Ornish diet.
In other words, I personally found that while following “strict ketosis”, things became eerily similar to the days in college when I was a competitive bodybuilder pursuing sub-3% body fat percentages. I simply wasn’t the most fun guy to hang out with in social situations due to my extreme dietary restrictions, the intense self-control became nearly exhausting, and when I traveled, I missed out on many culinary experiences, such as homemade ravioli in Rome, freshly baked crostinis in the Basque regions of Spain, and Korean rice bowls in Seoul.
I also found that I put on weight quite easily while eating low carb. I thought that being in ketosis meant I was burning my body fat, when in fact, I was just burning the fat that I was eating. Eventually, my female sex hormones tanked and I started gaining weight no matter what I did. I firmly believe this was because my body was in such a state of stress from not eating enough carbs.
Our body’s main source (and preferred source) of fuel is glucose, aka, carbs. We get energy from glucose to go about our daily activities. However, when glucose gets depleted from our body, either from cutting out carbs or not eating for a long period of time, our body looks for other sources of energy. When we decrease carbs to the point of having very little glucose being available, our insulin levels drop and fat is released from our cells. Our liver then turns this fat into ketones, our body’s second choice for energy.

Ketogenic diets have become popular in recent decades for their demonstrated positive effects on weight loss (Bueno et al., 2013), though the precise mechanism of action is not fully understood (Paoli, 2014). In fact there is contradictory data about KD in mice and rats. In fact, there are contradictory data about KD in mice and rats. For example whilst a huge amount of data confirm that KD in humans is effective in weight reduction, improving lipidemia and glucose tolerance (Bueno et al., 2013), it has been recently demonstrated that a long-term KD (22 weeks) caused dyslipidemia, a pro-inflammatory state, hepatic steatosis, glucose intolerance and a reduction in beta and alpha cell mass, all without weight loss in mice (Ellenbroek et al., 2014). Two considerations should be made: (1) the induction of ketosis and the response to ketosis in humans and mice are quite different and (2) mice and humans have different life spans, and results obtained in mice after several weeks on the diet can correspond to months on the diet in humans (Demetrius, 2005, 2006).
On a ketogenic diet, your entire body switches its fuel supply to run mostly on fat, burning fat 24-7. Insulin levels become very low, and fat burning increases dramatically. It becomes easy to access your fat stores to burn them off. This is great if you’re trying to lose weight, but there are also other less obvious benefits, such as less hunger and a steady supply of energy, keeping you alert and focused.
When examining the studies, the researchers noted that, on average, the participants in the VLCKD groups lost about 2 lbs. more of bodyweight compared to the low-fat diet groups. [19] This difference was statistically significant and described as “moderate”. The researchers also noted greater improvements in triglycerides, blood pressure, and HDL cholesterol in the VLCKD group compared to the low-fat diet group.
There seems to be an assumption sometimes that the more obsessed with losing weight we are, the lower our self image must be. Mine’s just fine….I’m 63 and I am happy to look 63….but I do NOT See the sense in inviting all the very well researched obesity related health issues into my life. Getting older is hard enough on the bod! So yes, I’m incredibly keen to drop more weight (obsessed if you like) but only because I want to deal with joint pain, avoid diabetes and cardiovascular disease … and simply to function better for longer.
Eating right on the keto diet can be a bit tricky, as you'll want to focus on the right food choices that will keep you in ketosis all day long. And of course, that means avoiding sugary and processed foods as much as possible, as these foods can jeopardize all that fat-burning action you worked so very hard to achieve. To keep you fuller longer, registered dietitian Abbey Sharp, RD, recommended focusing on high-fiber and high-fat food sources that are also low in carbs. This keeps you satiated fast, she said, since both fat and fiber are very satiating.
2) I have a hard time eating real food soon after rides/workouts. I had used Hammer Recoverite (1scoop instead of suggest serving of 2 and add 1scoop whey isolate protein) in the past because I feel a significant difference the day after with less muscle fatigue. Then I read a previous posts on your opinion of post-workout supplementation ( https://bengreenfieldfitness.com/2013/07/what-to-… ) and I realized the primary ingredient in Recoverite is maltodextrin. Since the 2013 article, has anything changed in your research that you might suggest I add PWO to aid in the muscle fatigue/recovery? (In other words, Is there anything more healthy I can take to replace the Recoverite or should the aminos/electrolytes/carbs/MCT’s from the recipe in this article be sufficient?) Thanks in advance, I appreciate all of your work!
Ideally, you combine supplemental ketones with a relatively low carb diet, especially if metabolic efficeincy is important to you. HOWEVER, you can achieve most of the benefits of ketosis aside from the fat burning efficiency by using exogenous ketones. So it all depends on how lean you are, what's important to you from a performance vs. fat loss standpoint, etc.
As ketones levels rise in the body, the cells of heart, brain and muscles begin to use them for fuel. And once the body is using ketones as a main fuel source, there are some profound and positive health effects.  Ketogenic diets are very effective for correcting cellular metabolic dysfunction. The high blood sugar of diabetes gets reversed, the seizures of epilepsy can be calmed, Alzheimers and Parkinsons symptoms are alleviated, extra weight can be lost, joint pain is diminished and so on.  In other words, the ketogenic diet is not a “fad.” It is a potent regulator of metabolic derangement, and when formulated and implemented correctly, it can be extremely effective at reversing all kinds of health problems. (See this paper.)
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