As was described in a recent Diet Doctor post on using ketones for Alzheimer’s Disease, it has long been known that the brain can use two fuels for its energy needs: 1) glucose or 2) ketones. Glucose is the product of the breakdown of carbohydrates that we eat or is made via our liver by a process called gluconeogenesis (literally “new glucose making.”) Ketones are the product of the breakdown of fat to fatty acids, either from fat in our diet or fat stored in our adipose tissue.
Either there are very few participants in the studies, they don’t have an even number of males vs. females, or they don’t last but a few months. One study only looked at 28 people; only 21 completed the study and 20 of these participants were men. On top of this, they were only followed for 16 weeks. Okay, so we see that 20 men can limit their carbohydrates severely for 4 months and lose weight which automatically makes their A1c come down. Great! So, the real question is, how long can these 20 men stay on this diet for the rest of their lives? How long would you like to go without eating any fresh fruit? I’m craving some now, so I’m taking a break to go grab a snack now!
Ben Tzeel is a Registered Dietitian and Certified Strength and Conditioning Specialist (CSCS), holding a Masters in Nutrition from the University of North Carolina at Chapel Hill.Ben has lived with Type 1 Diabetes since 1999 and has never allowed it to hold him back from achieving his goals. He is a published fitness model and author who writes about exercise, nutrition, and diabetes.
Truly Dr. Colbert is also a reputable source for more thorough science and modification of previous Keto extremes. The statements about Keto diets with dairy everyday are not true…I am a 66 year old professional (University trained) and have found medical people often very unknowledgable or partially knowledgeable which may be worse. I ask you Abbey to dig deeper…meet Dr. Colbert-not a quack and more in depth than your overview. Personally I am finding switch to more green’s and low glycemic vegetables and fruits with healthy fats, occasional dairy and healthy protein; a way of life that is helping our whole family. Please watch The Magic Pill…the help for family’s caught in old thinking from poor science (ie. Alex Keys) and with autism etc. and so much modern disease is in itself, motivation to search out more truth.
I am curious about what has been referred to as “keto rash”. I decided to shift from a GAPS Diet to a ketogenic one. I wasn’t tracking my carbs specifically and was doing well. Then I developed this rash on various parts of my body. I originally thought it might have been either pecan or MCT (C8) that I started having, but I have eliminated both of those. Then I did some research and realized that others have also experienced this rash after starting a strict Ketogenic Diet. There are a few solutions running about–most of which include introducing carbs at higher levels. Antibiotics were also listed. Anyway, I was wondering if you have run across this type of rash as it relates to starting a low-carb diet? Any thoughts, Dr. Jockers?
Type 2 diabetes is normally defined as a chronic and progressive condition resulting from the insufficient production of natural insulin, causing high blood sugar in many patients. Upon receiving an official diagnosis, most patients are told they will need to take medication for life and that there is no cure for diabetes. However, many scientists, clinicians and dieticians disagree with this prognosis, claiming that diets such as the ketogenic (keto) diet have the potential to support the reversal of Type 2 diabetes.

In a 2016 meta-analysis and systematic review, the researchers found that the low carbohydrate diet decreased fat in the liver significantly, but liver function tests did not improve significantly. When we look closely at the studies in the meta-analysis, they either found no effect on liver enzyme levels or a significant effect. In other words, the liver function of some people stayed the same on the low-carbohydrate diet while others improved significantly. Why the difference?
A second counterintuitive approach to healing the gut for children who are having a hard time gaining is to encourage a nice long ‘fast’ over night.  When the gut is less full, and the body can digest the food that’s in there completely and then it can repair an inflamed or leaky gut better.   If the gut is inflamed, food may be passing right through without being absorbed.  In addition, growth hormone raises during periods of fasting.
ME: It helps by removing carbs and forcing the body to rely on fat for fuel. This sort of primes the body for using stored body fat for fuel. It also gets hormones under control, especially hunger hormones like leptin and grehlin. It works because it is a lifestyle, not a fad diet. People can stick with it because they feel so good, aren’t hungry and don’t have cravings anymore.
Although this may repel people away, it also provides you with a clear sign that you are on your way to reaping all the benefits of keto and ketosis. As your body continues to produce ketones, it will become more efficient at creating and using the energy-shuttling ketone bodies, beta-hydroxybutyrate and acetoacetate, which will help reduce acetone levels and normalize your breath. In the meantime, while your body is adapting to ketosis, make sure you have breath-freshening gum or spray that you can use throughout the day to cover up keto breath (if you have it).
To be clear, most of the hype you’ll hear about how the ketogenic diet can ward off cancer is taking things too far. While there is a fair amount of research regarding cancer, studies have been limited to animals. One review published in Redox Biology highlighted some of them, indicating promising results for colon, gastric, and prostate cancers. Maybe more interesting are the few case studies involving human subjects. Bear in mind, we’re talking about a handful of people. In these cases, implementing a ketogenic diet seemed to halt disease progression.
As ketosis begins, your body will start dumping its stores of glycogen, a substance in your fat and muscles that carries excess weight. This will increase how often you urinate and can lead to an inevitable loss of electrolytes, Dr. Rahnama says. Electrolytes are essential to cardiac function and normal heart beating. “The loss of electrolytes, such as sodium, magnesium, and potassium will put the dieter at risk of a cardiac arrhythmia,” Dr. Rahnama adds.

I see several inconsistencies, one being a strict 20 grams or less of carbs, most Keto followers I see aim for closer to 30, and even as high as 40 per day. I also see several times in this article her opinion that you cannot get all of your essential vitamins and minerals without eating fruits, and I’m no nutritionist, but this is far from the truth. The writers hatred for this w.o.e. Presents itself early and often in this article, and because they weren’t able to successfully stay away from sweets, and other carbs, they’re attempting to scare others away as well, especially pregnant women. She admits that she’s been taught to follow the ADA’s dietary guidelines which has been proven to fail. It sadly isn’t working. She recommends consulting your physician before attempting this w.o.e., I tried that and was instructed to follow the clean eating that I had followed for the first 15 years with type 1. The 60 grams of complex carbs in meals, and 20 or so with snacks. That way allowed me to ride a dangerous daily rollercoaster, with damaging highs, and very dangerous lows. Yet my Endo was pleased with my sub 7 a1c, even though I was always tired. I’ve practiced a very healthy way of eating long before being dxd with type 1, which probably makes it easier for me to continue living this way. Ultimately, the info is out there, and those able to avoid certain foods will be rewarded with non diabetic numbers… some say big food/pharmaceutical are doing all they can to end this “fad” I’m not sure if it’s true or not, but the simple fact that there will always be those that lack enough discipline to remain in ketosis should still present them with enough clientele.


One problem with the keto diet, however, is that to date, research studies aimed at investigating its efficacy and safety have involved only men or animals (mainly mice). Some have been skeptical then that the keto diet can work equally well for women. Others question whether it’s necessarily a good idea for women to even try keto given the fact that women’s hormones tend to be more sensitive to most dietary and lifestyle changes.

If you’re wondering why iron is at risk on a meat-based diet, hear me out. Many grain foods provide a considerable amount of iron, because wholegrains naturally contain iron in their inner layer called the ‘germ’. Another reason is that some grain products can have iron added to them during manufacturing. So, once you cut grains out, your iron status could suffer, which can lead to unpleasant symptoms like tiredness and lethargy. It can even compromise your immune system.

Familial Hypercholesterolemia. Familial hypercholesterolemia is a condition where one or more of the genes for the LDL receptor are defective, making it more difficult for them to clear cholesterol from the blood. If a person with familial hypercholesterolemia is then put on a high-fat diet, they will become even more vulnerable to heart disease as the increased saturated fat and cholesterol content of the diet provokes higher cholesterol levels. To counteract these genetic vulnerabilities, it is may be best to follow a low to moderate fat diet with plenty of whole foods, fiber, monounsaturated fats, polyunsaturated fats (especially omega 3s), and limited saturated fats. This, as well as a lifestyle that prioritizes physical activity, stress relief practices, and plenty of sleep, should keep their cholesterol levels under control.


Great article! Sustainability is key and Keto diet is extremely restrictive compared to others. Many of the comments I see don’t understand the importance of many years of research before stating something has a “significant difference” than the recommendations that are already in place. Also, understanding the pro/carb/fat balance in each meal instead of focusing on just carbohydrates. We have practiced the same modified Mediterranean diet at my practice where someone can enjoy life, eat complex carbohydrates and years later they are still successful and hundreds of pounds have been lost for good 🙂 Thank you for the reminder (and the comparison of Adkins supported research).
The bottom line? If you’re thinking about trying the ketogenic diet, run it by your doctor first — regardless of any preexisting health conditions. And consult a registered dietitian nutritionist (find one at EatRight.org) to find a nutrition professional who can work with you to create a meal plan you can stick to. People with kidney disease or a history of disordered eating should avoid the diet, and people with type 1 diabetes may want to avoid it, as well. If you have risk factors for heart disease, you’ll want to speak with your doctor before considering the diet.
Some of us experience a rise in BG that’s hard to manage when trying Keto. This is one of the reasons why keto did not work out for me (plus weight gain and feeling lousy). That being said, there could be a lot of other reasons why he’s running high, so I’d highly recommend you work with a medical professional and dietitian if you decide to continue down this path. And if your doctor isn’t supporting you, find one that will.
By now, most of us have heard about the ketogenic diet. Whether it's because of the benefits of eating high-fat and low-carb, or because you can eat cheese all day long, it's officially become one of the hottest diets of the year. It may not be easy to cut out all the carbs, but emerging research suggests that eating fat can actually help burn fat. So, for anyone trying to lose weight, you may find it worth the carb cut. Beyond weight loss, recent research has found some other serious health benefits of keto that may impact your life later on. Let's take a look at what the research has to say.
I must note here, that as a nutrition professional who has worked in pediatrics and seen children who must follow this diet, it is incredibly challenging for both the child and family. Most people who must follow this diet for therapeutic medical reasons have trouble actually reaching ketosis with diet alone, and need to drink poor-tasting formula drinks to keep their carb-to-fat ratio in tight control. Many of these individuals must follow this way of eating to survive or have any sort of quality of life.
I suffered through a year on 20 grams of carbs per day and it was the worst year of my life. Yep, I lost weight, but at my current weight of 130 lbs and eating 30 carbs per meal and remaining in a prediabetes state for 15 years, I am healthy AND happy now. None of us know the long term effects of most of what is offered to us…medications, diet drinks, processed foods, restrictive diets. The point I was trying to make was eating healthier, more natural foods will be better in the long run, I believe we all have the common sense to agree on that, even if we can’t agree on how many carbs we will eat!
According to Dr. Cabeca, “Fasting is a key aspect of a healthy diet and has many anti-aging effects.” In particular Dr. Cabeca recommends fasting to women during or after menopause due to it’s anti-aging effects. For example, a 2016 study published in the Journal of the American Medical Association found that when women went 12.5 hours between dinner and breakfast (a common form of fasting), the overnight fast seemed to help improve immune system functioning to the point that it reduced their risk for breast cancer. (03) 
The main electrolytes affected by this process are sodium, potassium and magnesium. There are other electrolytes in your bloodstream, such as calcium and phosphorus, but their levels don’t change much on a keto diet. However, getting sodium, magnesium, and potassium in balance can help prevent against symptoms of keto flu and fix some of the side effects you may have long term. Read on to find out more about them.
Good article. A friend at work is stating this diet and of course being new at it, he is quite the Zealot. I have been into nutrition and exercise for over 40 years (57 years old now). I have tried s few different eating philosophies (I never use the word the word diet. Negative connotation and dieting isn’t good the way most practice it.). Eating Keto style and the logic behind it aren’t too different than some others. And you pointed out many of the misconceptions about cholesterol and triglycerides ect. For about the last 20 plus years I have pretty much followed a “Zone” type diet. 40% carbs, 30% fat, 30% protein. And I always get weird looks at the 30% fat part. Well, I’m 57 with 7% body fat. Not bad for and old guy. I work out and I supplement with protein as I lift weights. It’s worked well. The ratios may be different, but the emphasis on vegetable carbs and good fats are the key to either way to eat. There were only a couple things that kinda struck me as something that made me go hmmmmm. Using the Inuit people isn’t a good example really. They have evolved some different physical features over hundreds of years than we have. And there is no evidence if ketosis occurring in examination. And somehow when you mention eating large amounts of animal fat, just hit me as counterintuitive. It’s a much different fat than an avocado. Finally, and this is just me, I love fruit. True it’s probably less efficient, but its good, sweet, and beats the hell outta donuts for your health. It fulfills the reward need many of us have. I also feel if God put it on the earth naturally, it’s got a place in our food source. I’ve had a philosophy about excersise that’s served me well. What’s the best exercise? The one that you’ll do regularly. Get up and move and find out what works for your own body. It applies to good too. If you feel deprived or for various reasons can’t stay on the supposed best food program, what good is it? But if you stay with more natural and Balanced foods that usually leads to more energy then more and regular excerise. Check in. It looks like it’s been 2 years since you wrote this. I’d live to hear how your doing.
The more recent study was conducted online to ascertain if this online approach proved effective in eliciting weight loss.1 Dr. Saslow's team randomly assigned the 12 participants to the Keto diet and lifestyle improvement group and another 13 individuals to the traditional low-fat diet known as the Plate Method,1 supported by the American Diabetes Association. 
Oh yes global warming is real and so is global cooling. About 3 years ago it was officially recognized that the earths axis has tilted a 10nth of a degree. the north pole is now pointed more towards the sun than before making the northern hemisphere warmer. It has nothing to do with mankind at all! it’s called natural and is somewhere between the last ice age and the next.
The research on ketogenic diets also suggests you'll need to take a multivitamin to get enough minerals, calcium and vitamin D — most of which are readily available in plant-based foods. One keto-specific example: Not getting enough selenium, an immune-boosting antioxidant found in plant foods, can cause cardiomyopathy, a hardening of the heart muscle leading to heart failure.
There are numerous benefits that come with being on keto: from weight loss and increased energy levels to therapeutic medical applications. Most anyone can safely benefit from eating a low-carb, high-fat diet. Below, you’ll find a short list of the benefits you can receive from a ketogenic diet. For a more comprehensive list, you can also read our in-depth article here >
At the core of the classic keto diet is severely restricting intake of all or most foods with sugar and starch (carbohydrates). These foods are broken down into sugar (insulin and glucose) in our blood once we eat them, and if these levels become too high, extra calories are much more easily stored as body fat and results in unwanted weight gain. However, when glucose levels are cut off due to low-carb intake, the body starts to burn fat instead and produces ketones that can be measured in the blood (using urine strips, for example).
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