“Keto diets should only be used under clinical supervision and only for brief periods,” Francine Blinten, R.D., a certified clinical nutritionist and public health consultant in Old Greenwich, Connecticut, told Healthline. “They have worked successfully on some cancer patients in conjunction with chemotherapy to shrink tumors and to reduce seizures among people suffering from epilepsy.”
Our bodies run well on glucose (carbs)–they give us the necessary energy we need to function on a daily basis. When our body doesn’t get enough glucose (either because we’re cutting carbs too low, OR we haven’t eaten in too long), our body kind of freaks out and looks for other forms of energy to satisfy that role. That’s where the fat comes in. Without carbs, our insulin levels drop and fat is released from our cells. The fat overwhelms the liver which turns it into ketones, our body’s second choice to carbs for energy.
Such a thorough article. Thank you! I have a friend who swears by the KETO diet. However, I’m of the same thinking as you are, that cutting out or eating next to nil of any food group, is not what God meant. Discipline in portion size, and perhaps not combining certain food groups (proteins with heavy carbs is a not best for our digestive system), but both can be eaten when not combined, hence no cutting out of any food group. Thanks again!

I think lumping Keto diets in with other carb restriction diets is wrong. The reason (I’ve read) is that if you cut carbs somewhat, the body eventually responds by lowering the resting metabolic rate and you start gaining, but when you cut carbs to nothing (either in keto or fasting) the body keeps the metabolic rate high. It’s a survival mechanism, in a famine, we need energy to find food.

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I’m new to all Keto…trying desperately to loose weight…besides giving up sweets (which completely understand) need to know if hummus is okay…and what I gather from the extensive info I’m guessing like everything in life, the key is balance… too much fat? Hi calories? Do we have to worry about cholesterol in nutritional labels? Again thanks for the great information

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Hi, I am trying to do as much research as I can for my daughter and myself. My 19 year old daughter has been diabetic for 13 years and I am quite nervous about altering our diets without the approval of her medical team but they are not always on board with alternative lifestyles. I would love to follow your journey so she can see all the benefits you have gotten since you started.
Thank you for the information on the pros and cons of the keto diet. I have heard so much about it, a lot of people in my age group (55-65) are on it and have had success. I have NOT had the success that everyone else has had, I lose 7 gain back 2. Lose 3, gain back 4. I work out almost every day during my lunch break, which gives me only about 20 minutes of fast hard sweat. I have to wonder if this diet is NOT working for me because of this. I follow the dietary guidelines very strictly and I have experienced the effects of it, such as constipation, stinky pee and stinky breath. People tell me that by week 5 you should start to see a dramatic drop in weight. Not so for me, but then, I had the same issue when I was on weight watchers. The weight loss is so slow that I tend to just give up. I will stay with it for another month, but if I continue to see no real drop in weight, I am just going to assume that it is the wrong diet plan for me.

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Hey Chantelle, I would avoid chewing gum because most of them (even the sugar free kind) use sugar alcohols that are not keto approved like malitol and sorbitol. Although it is a small amount, it would still be advised to avoid them. Also, a lot of people feel that the action of chewing leads your brain to think you are consuming food and if no food is coming in, it may lead to your brain thinking you are hungrier than you actually are.
Today, the ketogenic diet is the world’s fastest growing diet, and with good reason. When practiced correctly, it has been proven to burn fat, reduce inflammation, fight cancer, balance hormones and gut bacteria, improve neurological diseases, and even increase lifespan. Unfortunately, many people remain unaware of several key factors that are crucial to the diet’s success, setting them up for frustration, failure and relapse.
This said, I do prefer low-carb balance compared to SAD. I can speculate a lot about SAD and about the non-discrimination of different carbs – like, lactose vs. fructose. It is only my opinion, that fructose has its value in the nutrition (black bears get body fat for hibernation eating fruits) yet somehow we miss to notice that naturally fructose had been available in humans’ diet only seasonally, while nowadays juices of all kinds are available year-round; not to mention fructose additives to sugar-rich products. And yes, fructose is addictive, and yes, this is part of the evolution for 200 thousand years of humans.

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This whole post must have taken so much effort and I think it’s incredible that you do this. The issue with these diets is that people hear about it, think it sounds good and do it. No questions! We are so lucky to have dietitians like you actually laying out all the research, the good, the bad, and everything in between about these diets, so THANK YOU!
I think I would be better is you would talk about how people could make the keto diet better instead of dismissing it, more emphasis should be put on eat vegetables, fermented veggies and healthy sources of fat. Those studies that showed the negatives of the keto all used man made polyunsaturated seed oil, the worst possible type pf oil that people can eat.

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Look, keto is simple. Please stop complicating it. You can honestly eat any food and stay in ketosis as long as you eat less than 25-50 grams of carbs a day. If you are an athlete you can eat up to 100 carbs per day. No food, I repeat NO FOOD is a keto food. Like hummus? Eat it! Like pineapple? Eat it! Unless you have a metabolic disease that causes your body to be super sensitive to sugar you can eat pretty much any whole food and remain in ketosis.  

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I love prepping meat days in advance, so I don’t have to cook meat for every meal. Organic processed meats are quick and easy, but they also cost more than cooking, so it’s up to you. Also, be sure to save bacon grease for cooking other foods. I use bacon grease when I fry veggies (if I need extra fat) and chicken and it tastes great! Avoid sauces unless you are using low carb meat sauces or dips.
When it comes to meat, there’s not much to avoid. You should always make sure to purchase meat with fat and void lean cuts, as this will not help you lose weight. Remember, fat is your friend. Fat is needed, so your body has fat to burn and not sugar. When you are on a low carb diet, you are not fueling your body with sugar, so make sure you eat plenty of fat. If you don’t have fat to burn, your body will start burning glucose (even if you have fat stores). Your body needs to know that it never has to worry about not having enough fat.
Been doing keto since Dec. 26, 2018. I started for weight loss but got a few bonuses so far. Haven’t had a hotflash since starting, sleep so much better, brain fog gone and more energy! I’m perimenopause. I researched a lot before starting…realized the SAD way of eating is horrible. Carbs and sugar are not necessary. Dr. Phinny and Dr. Volek have the science behind this on YouTube (videos). Quite eye opening. 

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Consider buying your meat in bulk. This will save you lots of money if you know where to get family-sized packages of meat. When you buy meat in large quantities, you can also cook it in bulk as well. Taking the time a few days per week to cook meat makes it simple to follow the keto plan. You can cook your meat beforehand and have it ready to go when you need it. You can purchase ground beef, chicken pieces, small steaks and even seafood in bulk.

Been doing keto since Dec. 26, 2018. I started for weight loss but got a few bonuses so far. Haven’t had a hotflash since starting, sleep so much better, brain fog gone and more energy! I’m perimenopause. I researched a lot before starting…realized the SAD way of eating is horrible. Carbs and sugar are not necessary. Dr. Phinny and Dr. Volek have the science behind this on YouTube (videos). Quite eye opening.

Our bodies are incredibly adaptive to what you put into it – when you overload it with fats and take away carbohydrates, it will begin to burn ketones as the primary energy source. Optimal ketone levels offer many health, weight loss, physical and mental performance benefits.1There are scientifically-backed studies that show the advantage of a low-carb, ketogenic diet over a low-fat diet. One meta-analysis of low-carbohydrate diets showed a large advantage in weight loss. The New England Journal of Medicine study resulted in almost double the weight loss in a long-term study on ketone inducing diets.

How do you do the ketogenic diet


Cutting out a whole food group (or in this case, more than one) is a dietitian’s worse nightmare. It not only makes it a really hard diet to follow, but also stresses the hell out of your body and makes it work a lot harder to keep up. In a US News & World Report’s review of 2018 diet, the ketogenic diet came in last place as a sustainable means to weight loss because of its restrictive nature.
There are so many tricks, shortcuts, and gimmicks out there on achieving optimal ketosis – I’d suggest you don’t bother with any of that. Optimal ketosis can be accomplished through dietary nutrition alone (aka just eating food). You shouldn’t need a magic pill to do it. Just stay strict, remain vigilant, and be focused on recording what you eat (to make sure your carb and protein intake are correct).
When you start the keto diet, you are entering a new world of eating. And nowhere is that more apparent than at the supermarket. Suddenly, all of your stand-by foods like macaroni and cheese, pasta and bread are no longer on your shopping list. When you go shopping for the first few times you may feel like a fish out of water. However, with a bit of practice, you’ll feel just as comfortable as you were with your previous shopping lists.
No one is trying to diminish your success, but it does not work for everyone, and studies show it can have long term negative effects on your overall health. If you look at the Meta-analysis it shows a calorie restricted diet and Keto for 12 weeks had the same weight loss. There are also many studies that suggest looking back at people after one year those on a calorie restricted diet kept more of their weight off. The only one it does better than is just a low fat diet, which Dieticians stopped suggesting long ago. And as Health Care professionals we read the “REAL SCIENCE” not the internet articles, You Tube, Blog, book writers. One of the books written about it by Dr. Jason Fung. Have you looked him up on PUBMED? He has not written one article published in a real medical journal to be such an expert. It is not magic, it is not a cure. If you like the diet and it does not mess up your cholesterol then so be it but promoting it to others not knowing their medical history can be dangerous. What people don’t realize is that for year’s we have known that if you lose 7-10% of your own body weight your blood sugars will improve, cholesterol, and blood pressure. But you don’t have to do the fasting and put more burden on your Liver or potentially increase your risk for cardiac problems eating such high fat. If you do high fat at least do plant fats and not animal fats. But of course everyone is happy with your success but just keep a tab on your lab work.

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Hi Leigh, I like to inform myself before I make my arguments, so I try to do as much research as possible. Same goes for when I was looking into the keto diet. I’m so glad you’ve seen improvements with the keto diet. I still believe that for the majority of people, the keto diet has its side effects and may not be successful. If it helps some people, then I’m glad!
This whole post must have taken so much effort and I think it’s incredible that you do this. The issue with these diets is that people hear about it, think it sounds good and do it. No questions! We are so lucky to have dietitians like you actually laying out all the research, the good, the bad, and everything in between about these diets, so THANK YOU!
This is of course just an overview of what you can eat, but these are things I’m most likely going to pick up from the grocery store. I also didn’t want to include crazy expensive specialty items like Erythritol for beginners. I think we all get excited about making our favorite junk foods in the style of our diets right away. This is fine…but it can be very expensive, time consuming and exhausting. Stick with the basics, especially when first starting out!

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Done Keto diet for over a year now. I started it due to increased liver enzymes showing a start on a path towards low-level diabetes due to being about 30 lbs overweight (229 lbs, 5’10” endomorphic, muscular build). After a year, my Cholesterol is excellent, I dropped to 192 lbs (37 lbs lost), maintained muscle mass through maintenance workouts and cardio, resting heart rate is 50bpm, EKG shows perfect results, blood pressure is excellent, and full panel of bloodwork shows zero abnormal liver enzymes.

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Another thing we know about diets and weight loss is that the results are not easily maintained. I’ve written about this in depth with regards to the participants on the Biggest Loser. This was evident in a study  analyzing 31 long term studies on dieting, which found 2/3 of dieters put back the weight they lost. Other research has reported the failure rate may be as high as 95%. This isn’t specific to the keto diet but rather, any diet that is restrictive and unrealistic may be nearly impossible to sustain.
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.

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The volumes of knowledge on display here make this book a mainstay in the field of ketogenic dieting.  This also makes it a really great option for anyone who’s interested in this high-fat diet. While this book is a superb document for anyone looking to enjoy the keto diet, don’t be scared as there is nothing too crazy in here! One of the best keto cookbooks for anyone just starting out and looking to learn the ropes.

Can you drink alcohol on a keto diet

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