Your current health status. Your overall health plays a major role in how fast you will lose weight and adapt to a lower carb diet. If you have any hormonal or metabolic issues, weight loss might be slower or a bit more challenging than expected. Insulin resistance, excess visceral fat, and thyroid issues, for example, can all have a significant impact on your weight loss rate.
All I can say is…Keto has been AMAZING for me and a lifesaver. Instated this journey at 240lbs. I’ve been obese for 20 years. My cholesterol was awful. Triglycerides were massively high. I was a walking heart attack. I’ve lost 40 lbs since January and 3 sizes,and a TON of inches. I’ve never felt better in my life. I have so much energy. At 51 I’m going to a local amusement park, walking ten miles and riding record breaking coasters. My cholesterol? My doctor is amazed on all levels. Hes applauding my bew health lifestyle. And I know literally thousands of people online and off line who’ve had thecssme success and some who have lived this way for more than ten years. Just because you didn’t like it doesn’t make it bad. And btw…its not a free for all. Macros depend on the person. My fat levels,aren’t nearly that high and once you reach ketosis you cut down on the fat. THAT is when fat burning starts and the fat burning absolutely happens.
Hi Ben – Great article. I had trouble at the end figuring out if you were now eating high fat (60-80% of calories), or if you went back to something closer to 50% fat calories and higher carbs and are using exogenous ketones to get int ketosis when needed. Are you doing any carbs at night or a refeed, or just having higher carbs on most days? Thanks
In 2017, Drs. Kevin Hall and Juen Guo published a meta-analysis of controlled feeding studies that compared diets of equal calorie and protein content with variations in carbohydrate and fat content. By designing the study in this way, the researchers could finally find out whether restricting carbs or limiting calories is more important when it comes to weight loss.

If you give your body any more than the absolute minimum amount of protein that it needs, it will immediately break it down into carbs. This is why keto sites often give a guideline for not eating too much protein. The problem is that there’s no one guideline that works for everyone, and without specifically tailoring keto to your body it’d be easy to accidentally ingest too much protein.


Normally, the body breaks down carbohydrates, fat, and (sometimes) proteins to provide energy. When carbohydrate is consumed in the diet, some is used immediately to maintain blood glucose levels, and the rest is stored. The hormone that signals to cells to store carbohydrate is insulin. The liver stores carbohydrate as glycogen, this is broken down and released between meals to keep blood glucose levels constant. Muscles also store glycogen, when broken down this provides fuel for exercise. Most cells in the body can switch readily between using carbohydrates and fat as fuel. Fuel used depends on substrate availability, on the energy demands of the cell and other neural and hormonal signals. 
Of course, ketosis itself comes with its own risks. Circulating ketone bodies make your blood too acidic, and your body will draw calcium from your bones as a buffer. This also happens in ketoacidosis, which is when you have so many ketone bodies that it becomes dangerous and will draw far more calcium out of your bones. Giancoli notes that dieters usually aren't in such an extreme starvation mode that they develop ketoacidosis. There are few to no studies on healthy adults undertaking a non-therapeutic ketogenic diet, but studies of epileptic children on the diet show increased bone demineralization and high calcium levels in the blood.
Oh my god! This is one of those ‘Too-good-to-be-free’ comprehensive resources. I’ve been following your content and I wonder why you give away so much well researched info for free. Anyway, that’s a pretty damn good job you’ve done here. Until I read this, I was floundering with so much bit sized confusing information out there. You’ve literally dumbed it down for me. I’m off to take my measurements before I start the diet! Thanks a ton!!!
Long story short I’ve had the most terrible diet and mindset about food of anyone you’ve ever met my entire life. It consisted of pretty much only carbs. After studying them I’ve realized that it’s the reason that I got so big.. 570 at my known largest when I was weighed in the hospital. First time seeing a doctor in over 20 years. I bought a scale and tried random diets but couldn’t keep to them. I stayed at 530 ish for a year.

A few variables were tested in conjunction with weight loss. One was initial insulin secretion, specifically to see if it had any affect on loss in each diet group. It did not. They had also checked a few genetic markers that were suspected to give dieters pre-dispositions to success either on low fat diets or low carb diets based on previous studies. However, genetics were shown to have no effect.
The ketogenic diet has been studied in at least 14 rodent animal models of seizures. It is protective in many of these models and has a different protection profile than any known anticonvulsant. Conversely, fenofibrate, not used clinically as an antiepileptic, exhibits experimental anticonvulsant properties in adult rats comparable to the ketogenic diet.[57] This, together with studies showing its efficacy in patients who have failed to achieve seizure control on half a dozen drugs, suggests a unique mechanism of action.[55]
Ketone urine-testing strips, also called Ketostix or just ketone sticks ... are small plastic strips that have a little absorptive pad on the end. This contains a special chemical that will change colour in the presence of ketones in the urine. The strips may change varying shades of pink to purple, or may not change color at all. The container will have a scale on the label, with blocks of colour for you to compare the strip after a certain time lapse, usually 15 seconds. Most folks simply hold a strip in the flow of urine. Other folks argue that the force of the flow can "wash" some of the chemical away, and advise that a sample of urine be obtained in a cup or other container, then the strip dipped into it.
Okay, I’ll admit I bailed just after the sriracha covered chicken costume, so maybe I missed it, but I wanted to ask: is Keto intended to be a permanent diet change? It seems very challenging, and as I was reading, I kept asking myself “How is this consistent with the concept of small sustainable changes?” Is it? I think it’s a great topic to cover, but how would you describe the relationship between the keto diet and NF philosophy regarding sustainability? Thanks!
This is because you get rid of the foods that cause high blood sugar, also known as glucose. Glucose is the easiest way for your body to get energy, but it can lead to energy crashes if you get too much in a short time. To get rid of the glucose and use it up, the body needs to produce insulin. As we produce more and more, our bodies become resistant to it, and this can lead to diabetes.
The longer cholesterol circulates in your bloodstream, the higher the likelihood that it will dig its way into an endothelial wall and potentially contribute to atherosclerosis or plaque formation. This is why it’s so dangerous to eat a high-fat diet, but to also have your nightly dark chocolate bar, overdo it on the red wine, or have weekly “cheat days” with pizza, pasta, or sugar-laden ice cream.
Experts are split on whether the keto diet is a good idea. On the one hand, Lori Chang, registered dietitian and a supervisor at the Center for Healthy Living at Kaiser Permanente West Los Angeles, says using a “cleaner” source of energy—ketones rather than quick-burning carbohydrates—can improve mood and energy levels. When you eat refined carbohydrates or just too many carbs in general, the blood is flooded with excess insulin, Chang says. "This can lead to a blood sugar rollercoaster that stresses the body and negatively impacts energy levels and mood. When you’re in a state of ketosis, however, ketone bodies don’t require insulin to cross the blood-brain barrier, which wards off unfavorable blood sugar levels."
Hey Alex, thanks for commenting and great to have you as a new listener! For this kind of thing, because it requires so going into detail, I'd suggest you book a consult with me by going to 

Therefore the combustion enthalpy (∆H) of each fuel is an important factor in the energy it can provide to the cell. When expressed as the energy per 2 carbons in the molecule, ketones (BHB) have a higher combustion enthalpy (∆H) than pyruvate, lactate and glucose (see table). This means that the amount of energy that could possibly be transferred to ATP is higher than for those other substrates:
A few days ago I started reading about Keto and what carbs really do to you. Figured It could be one more diet to try. Simply take every single carb out of my diet and just eat the rest? Even someone as stubborn as me could do that. So I’m Basically eating eggs meat cheese and water. A diet Dr Pepper with dinner. On oct. 7th 3am I made the choice to start I weighed myself at 524. It’s now Oct 10th at 1:30pm and I’m 505. (I’m also walking around for a total of 2 hours per day) I’m finding it hard to believe. Just this little boost has already changed the way I’m thinking about life. I’ll post back soon
I have changed to a Ketogenic Lifestyle for over a year and half now. This is not a Diet is a lifestyle change. I choose to be healthy and weight loss is an awesome side effect. I’m over 100lb down, no more diabetes, I reversed my fatty liver disease, and I am totally off all blood pressure medication. I have more energy and now able to work out 5 days a week. My blood work had never been better including my cholesterol levels. I’ve tried every diet and nothing worked. I respect your opinion and your post on the blog, but Keto has been a lifesaver for not only me but my family as well. I wish you well in your journey and I’m glad you found a WOE that works for you. I’m living proof Keto works.
If I see a TSH above 2.0 or a trend towards higher values in someone who is testing repeatedly, I get worried – and prefer to see TSH at 0.5-2.0. Of course, this doesn’t mean that you begin to shove carbohydrates indiscriminately down the hatch. However, it means that your high-fat, low-carb diet should include thyroid supporting foods rich in iodine and selenium, such as sea vegetables and brazil nuts, and should also include carbohydrates timed properly, such as before, during or after workouts, when the carbohydrate is more likely to be utilized for energy and less likely to spike blood glucose levels.

In the mid-1990s, Hollywood producer Jim Abrahams, whose son's severe epilepsy was effectively controlled by the diet, created the Charlie Foundation to promote it. Publicity included an appearance on NBC's Dateline programme and ...First Do No Harm (1997), a made-for-television film starring Meryl Streep. The foundation sponsored a multicentre research study, the results of which—announced in 1996—marked the beginning of renewed scientific interest in the diet.[1]
Schele E., Grahnemo L., Anesten F., Hallen A., Backhed F., Jansson J. O. (2013). The gut microbiota reduces leptin sensitivity and the expression of the obesity-suppressing neuropeptides proglucagon (Gcg) and brain-derived neurotrophic factor (Bdnf) in the central nervous system. Endocrinology 154, 3643–3651. 10.1210/en.2012-2151 [PubMed] [Cross Ref]
Furthermore, the participants who ate the low-carbohydrate diet lost an average of 0.8% body fat while those that ate the low-fat diet gained an average of 0.7% body fat. [18] This suggests that a higher fat diet may improve may lead to more favorable changes in body composition. Subjects in both groups notably reduced their waist circumference. [18] However, the reduction was greater for the low-carbohydrate group. [18]
Moreover, in the above study of Sumithran et al. (2013), ketosis maintains post-prandial secretion of CCK as previously demonstrated by other researchers (Chearskul et al., 2008). Note that the orexigenic effect of BHB is blocked by transection of the common hepatic branch of the vagus nerve (Langhans et al., 1985). The hepatic branch contains fibers from the proximal small intestine, stomach and pancreas, and is sensitive to CCK (Horn and Friedman, 2004); ghrelin signals to brain are also transmitted via vagus nerve (Habara et al., 2014). Thus, the effects of ketosis on these two appetite-related hormones could be one of the many factors related to the effects of such nutritional regimen on food control.
Anecdotally speaking, people do lose weight on the keto diet. Heather Wharton, a 35-year-old business relationship manager from Tampa, Florida, lost 140 pounds since starting the keto diet in January 2016: “I plan on being on the keto diet for the rest of my life,” says Wharton. “My husband and I consider ourselves to be food addicts, and the keto diet is what we use as a form of abstinence from trigger foods that have sugar and other carbohydrates." A typical day of eating for Wharton includes coffee with a protein supplement, a cup of unsweetened cashew milk, cauliflower rice with ground turkey and liquid aminos (a carb-free substitute for soy sauce), spinach, six slices of turkey bacon, six eggs, and a little salsa.
After 2 years in ketosis suddenly I find my blood glucose has risen to high levels even while in ketosis. I thought it was the dawn phenomenon, stress hormones like cortisol but now I am beginning to think I am eating too many exongenous keytones like too much MCT oil? I am not taking exogenous keytone supplements but wondering if too much oil/ fat in the diet generates exogenous keytones which inhibits the livers production of endogenous keytones. I have read if the liver is producing endogenous keytones it is not at the same time producing glucose through gluconeogenisis?
Staying in Ketosis long-term: Chronic Ketosis can cause fatigue, muscle soreness, insomnia and nausea. "Unless you have a medical condition that requires you to stay in Ketosis for long-term, you shouldn't stay in that state for a prolonged period without any carb ups," Mavridis suggests. And if you're a beginner, "it’s recommended that you go through the fat-adaptation phase so that your body becomes accustomed to burning both glucose and fat for fuel," says the nutritionist.
Some research suggests that ketogenic diets might help lower your risk of heart disease. Other studies show specific very-low-carb diets help people with metabolic syndrome, insulin resistance, and type 2 diabetes. Researchers are also studying the effects of these diets on acne, cancer, polycystic ovary syndrome (PCOS), and nervous system diseases like Alzheimer's, Parkinson's, and Lou Gehrig's disease.
"I work in a really corporate environment where there's often donuts and cupcakes around. My coworkers say, 'Nobody will know if you just a have a cupcake,' but I will know! It’s not about beating the system or sneaking in cheat meals. I know the food is going to make me feel bad all day and it's not worth it to me. There’s always a line of people at the coffee machine at 2 o’clock in the afternoon because they’re all so tired after lunch."
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!
I’m a former low-carber, and while I did feel great while on keto, and it did help me to lose the biggest chunk of weight I have lost, I ended up finding that it was not a sustainable approach for me. If I ever slipped up, the bloating and weight gain that would happen overnight was so demoralizing (even if it was just water weight fluctuating up) that I would go into an emotional downward spiral complete with a crazy carb bender and gain everything back for real in a matter of weeks. I remember that at one point I was actually using test strips, and I got kicked out of ketosis by a meal of salmon and Brussel sprouts that had a sugary glaze on them, which I had chosen as a healthier option at a restaurant while my husband and my friends ate pizza. I was so angry that that had happened when I had been trying so hard to be good and I went right “back on the wagon” the next day, but I could not get back into ketosis, and I stopped losing weight. A consistent healthy pattern should not be so hard to maintain. I would tell people all day and all night that I didn’t feel deprived, and I didn’t think I was lying, but I think there was evidence in my behavior that I did indeed feel deprived.
The problem with this is that MOST people don’t turn to keto as a lifestyle. Many turn to it and use it as a diet for quick weight loss. If you love keto and live a keto lifestyle, not feeling deprived in any way, then okay, eat keto! But I don’t agree that we need to demonize certain foods. This can lead to eating disorders and an unhealthy relationship with food, and this is why I wrote this article, to help people like me who have to deal with this.

Those who’ve had their gallbladder removed may need ox bile supplementation to support their body in breaking down fats[*] and aid in overall digestion. When taken with a meal, ox bile provides a concentrated source of bile which takes the place of the bile that would have been secreted by your gallbladder. As mentioned before, proper digestion is key to helping aid in weight loss and optimizing overall health and wellness.