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Keto Diet & Diabetes: How Ketosis Affects Insulin – Thomas DeLauer

There’s a lot of mystery surrounding ketosis and diabetes and in this video I wanna give you an understanding of both diabetes and how it affects the body but also ketosis and its effect on diabetes, not only in theory, but also with some peer reviewed studies. In this video, I wanna start off by breaking down what insulin does in the body. Then I wanna talk about the various forms of diabetes, type one and type two and then I’m gonna give you a breakdown of how the ketogenic diet and insulin plays a role when it comes down to diabetes because it’s really important that we have an understanding there.

So lets dive in and talk about insulin really quick. So within our pancreas, we have these cells that are known as beta cells and what beta do is they produce insulin as a response to any kind of carbohydrate that our body sees. So basically, when we have glucose that is derived from food that we eat, our beta cells produce these insulin molecules. These insulin molecules flow around through the body, they allow the cell to absorb that glucose. They allow liver cells, muscle cells and fat cells to absorb the glucose to ultimately be used for fuel. So then we take the next step to look at diabetes, we can understand how diabetes and insulin work together. So the first one I wanna talk about is type one diabetes. A type one diabetes is not traditional, type one is a little bit more rare and it is an autoimmune condition.

You see, what happens with this autoimmune condition is you body is actually fighting off beta cells. So those beta cells that produce insulin, your body’s own immune system is fighting them off and it’s making it so that they’re not able to produce insulin. That’s why a type one diabetic needs to take exogenous insulin to make sure that they’re blood sugar doesn’t go through the roof from foods that they eat. Here’s the other thing, without insulin, the body can start to essentially starve. Because it’s not able to see that glucose because the insulin is never allowing the glucose into the cells, the body starts to break down proteins and fats. That’s why often times, type one diabetic are a lot more thin that the type two diabetic. It’s not the conventional way that we would look at diabetes as just being an issue with overweight people.

Then we move in to type two diabetes. Type two diabetes is the more common one and this is sort of the opposite in a sense, it happens on the other end of the spectrum. Our body’s cells are liver, our fat, our muscle cells no longer can receive insulin very well or they get desensitized to it. So they get so much insulin at one point in time that they don’t respond to it nearly as well, which means that blood glucose ends up staying elevated and therefore, the pancreas tries its best to produce more insulin. Those beta cells try really hard because they see blood sugar rising but they can only do so much. So they try and try and try and eventually become exhausted and sometimes even fully shut down, which gets you to the point where you cannot produce enough insulin to handle the glucose. So you either have to take medications to lower your glucose or you have to take exogenous insulin if it gets too bad.

So now lets go into the ketogenic diet and how this works because this is pretty interesting. Now, initially, on the surface, we can look at the ketogenetic diet, the reduction of carbohydrates and how it would reduce our need for insulin because we don’t need as much insulin because we don’t have as many carbs. So I wanted to look at a couple of studies and I found one that was extremely interesting and this one breaks down the exact effect of the ketogenic diet on type two diabetes. This study was published in the Journal of Medical Internet Research Publications and it took a look at 262 people that had type two diabetes. And what they found was that when they put them on a ketogenic diet, under 30 grams of carbohydrates per day and increased fat intake, that they started to have some pretty remarkable results.


1) A Novel Intervention Including Individualized Nutritional Recommendations Reduces Hemoglobin A1c Level, Medication Use, and Weight in Type 2 Diabetes. (2017, March 7). Retrieved from
2) Vieira, G. (2017, July 15). Why DKA & Nutritional Ketosis Are Not The Same. Retrieved from
3) Type 1 diabetes mellitus successfully managed with the paleolithic ketogenic diet… (n.d.). Retrieved from

Custom Keto Diet



  1. I have been watching your videos just recently and have learned so much. Recently I came across an article that has some misleading info and was shocked. Here is one of the statements: "A diet composed of rice & fruit, simple low-fat, high sugar & carbohydrate foods actually had no negative affect on insulin resistance at all! And actually improved it!" Wow right!!! Of course they are trying to sell some info regarding their solution but how can someone actually state this. They based it on a study by Dr Walter Kempner at Duke University from 50 years ago! It is called the Rice Diet. Are you familiar with this? What are your thoughts?

  2. I could really use some advice— I’m a Type 1 diabetic with pretty serious adrenal fatigue. When I am fasting, my blood sugars go UP. Also, when I do keto my blood sugars SKYROCKET. It makes no sense given what other diabetics report. Does anyone else experience this or have an explanation?

  3. Hi Thomas, I started the ketogenic diet 5 days ago, since then I have lost 2 kgs and feeling better, I even had those terrible chesty caugh for 2 months that wouldn't leave and suddenly disappeared in the last 2 days, is it linked to my keto diet? I don't know… Anyway because of this I convinced my mom who is a type 2 diabetic to go on the keto diet and she did some online research and came across this,
    Can you maybe shed some light as it is a bit confusing ??

  4. As a T1D it is really important to track your blood sugars on a keto diet because you tend to develop an insulin resistance eating such small amounts of carbs. If you find yourself to have high blood sugars besides eating almost no carbs and injecting enough insulin you have to immediately stop the keto diet and start eating carbs to bring back your insulin sensitivity. Ketones are the healthier source of energy but combined with high blood sugars they can be life threatening as they will eventually cause ketoacidosis.

  5. I figured out “Vαnοjο Fivu” (Google it) from my good friend and read it to shed pounds and treat my diabetic issues. I had been following a firm fitness and also diet program. Right after one day on the diet regime my blood sugar levels was down about 35 points, and by day Four it was down about Sixty points. It has been efficient for me personally. I am very happy that I was able to normalize my blood sugar..

  6. Thank you for this! I’m a type 1 diabetic and my insulin needs and BGLs and ketone levels are forever changing and I’m looking into the option of a ketogenic diet too. Currently also trying to find the balance between insulin in order to keep my bodies ketone response in a nutritional ketosis. Been having some large spikes but hopefully soon will find the balance. Point is your video has helped me understand the relationship

  7. I'm a Type 2 from the UK, 52 Year Old Man. I have Diabetes 15 years and not really controlled it, mainly due to my love of food… and the massive portion sizes I have. Anyways I have tried the KETO diet twice before, each time for 6 weeks… both times it's taken my blood sugars into single digits… however I've felt like crap, even though I put that down to not eating enough FAT… so trying it again from today… My only worry is I have just checked my Keytones in Blood… and it's came back as 1.1 mmol/L and I am worried I could go into Ketoacidsis… seems pretty quick for day 1… any advice ? Would love to know what Thomas thinks…

  8. If you wish to remove diabetic issues and would like to change to a more healthy lifestyle, then you could rely on this “Vαnοjο Fivu” (Google it). The manual have taught me about how cells aren`t able to feed on glucose because of fat. ”Vαnοjο Fivu” (Search Google) has helped me cure diabetic issues and prevent its serious and also lethal outcomes..


  10. Hi
    I am pre Diabetic, my HA1C was 6.3 , fasting test was 124 and my weight was 88kg/ 194 pounds, I have followed keto diet since 3 months till now,
    I have lost 22 kg/ 48 pounds , at present my fasting test around 82 – 90 every day and my ha1c test is 4.8.
    The questions are::
    1- Am still pre diabetic or not?
    2- Do I still have insulin resistance?
    3- what tests do I have to make to make sure that I have reversed insulin resistance and pre diabetic.
    Thanks a lot.

  11. I am on a 21/3 diet- How do the various insulims (ultra, fast, and regular acting insulin affect the diet if I take them once a day while eating in the 3 hour window. I am still taking insulin once a day as when I do eat in that 3 hour window, my sugar is still going as high as 225. I am thinking that I should use an ultra fast insulin (like aspart) to get the meal spike down and then get the insulin out of my body as fast as possible, so use ultra fast insulin (like aspart) once a day. Correct, not correct?

  12. I have a question. I saw one of your YouTube video talking about Crystal Lite and its effect on your insulin. I'm on Keto and according to the pee strips I'm in moderate ketosis. I have a handle on my food but I HATE water so I've been drinking Crystal Lite. I try to drink a gallon a day. Is this stalls no stalling my weight loss at all?

  13. Big fan of yours from india. Reply please if possible my question is that my dad is suffering from diabetes type 2 and there is no extra weight which he would aim to lose and his sugar level is generally uncontrolled and doctors have prescribed insulin thrice a day due to which his sugar level drops below 80 and injections. Day by day his body is getting weaker and doctor just keep increasing medication power (mg) he is nether a heart patient nor liver kidney patient. Thomas please tell me that is there any specific diet which can help him to reduce blood sugar and yes he is not physically active too so please sir reply to this comment just suggest something effective. I just want my dad to be happy again thank you so much ?

  14. Hi Thomas: Hope all is well. Before I embarked on Keto journey, my fasting blood sugar was 90-95. It has been 3 months that I have been on Keto and Iam on ketosis. No sugar and I get my few percent carbs only from avocado and vegetables. Ironically, my fasting blood sugar is now about 112 which means I have prediabetes. And there is an article that corroborates with the possibility of kept diet and raise in blood sugar. By the way, I have lost 22 pounds on this diet. But Iam getting concerned about this increase in blood sugar and keto. Please comment. Thanks so much!

  15. Thomas – Firstly just want to say your videos are fantastic and so informative. Secondly – as an expert I was wondering if you could offer any advice to type 1 diabetics who are intermittent fasting. When i do this right it feels amazing but due to how much external factors like diet, excersie and stress affect my sugar levels alot of the time my sugar levels will fall too low whilst I'm trying to complete my fast (which I do mainly for autophagy benefits). Is there a way I can slightly correct my sugars by eating something without breaking the fast or loosing the ability of gaining the autophagy benefits??? If you can help with this I will be extremely grateful.

  16. Hi Ive been testing my glucose on the keto mojo after two years on Keto. And it seems Im developing insulin resistance. I have a high family history of diabetes in my family. My resting glucose is 97 around 10 am. Is there anything I can do other than strict Keto to help heal my body and teach it to burn fat again?

  17. Thank you for this video. I've been a type 1 diabetic for 12 years and an looking to change my diet. I want to try keto but am nervous to try. This video helped calm much nerves. ?

  18. Oh I'm so confused! I am 58, 185 lb PCOS, on metformin since 1990 and in recent years using Lantus (slow acting) at bedtime and Humalog R with meals. I approached both my diabetic nurse and my doctor and they both don't recommend I do this diet because of ketoacidosis. They have scared the heck out of me. Do you know of any other YT channels where an individual is a type 2 diabetic and has followed this diet. I'd like to be able to follow their lead. Thanks Great info I was just going to go off everything except Metformin and add insulin as needed!

  19. I learned “Vαnοjο Fivu” (Google it) from my good friend and read it to burn fat as well as heal my diabetic issues. This guide has shared me the perfect fitness and diet plan to go by. I had been able to decrease Thirty-five points from my blood sugar levels after a day on the diet routine. Right after 4 days, I lost Sixty points from my blood glucose levels. That worked very well, however, and that I felt good. I`m very happy that I managed to stabilize my blood sugar..

  20. With regards to information about general health and also diabetic issues therapy, I have found this “Vαnοjο Fivu” (Google it) easy to follow and extremely sensible. Through this program, you can change your lifestyle and diet without having to be particular about your carb or even calorie. After transitioning into a healthier and also greener way of life, I didn`t simply lose fat but also I am also freed from diabetes as well as hypertension! It is genuine that you truly could change diabetes…

  21. I found out I was T1D about 9 months ago and just recently decided to try the keto diet. But I have also been vegetarian for 12 years so I’m doing a vegetarian keto diet. I was doing a relatively low carb diet before and taking 1 unit per 10 grams of carbs for fasting acting with each meal. And I was taking 12 units of long acting each day. I’ve been doing the keto diet for 3 days now and I do not need to take any fast acting insulin and have dropped my long acting to 8 units which is clearly still too much for me since I’ve been dropping into the 50s/60s at night when I’m sleeping. I’m thinking my pancreas might be producing enough insulin for me to stop taking insulin completely. Any suggestions? I am 24 years old, work out a few days per week and use a cgm to monitor my levels as well as occasional finger sticks.

  22. Here is a very scientific question for you.

    I have been on very low carb for 7 weeks now.

    I eat between 12:00pm to 9:00pm, usually only one meal early in that eating window because later I'm really not hungry but will graze on sunflower seeds (in shell), 4 or 5 macadamia nuts and one or two brazil nuts. But nothing after 9:00pm.

    Okay, each morning I drink coffee with little heavy cream no sugar and head to the gym to work out.

    When I come home 1.5 hours later, I check my blood sugar.

    It reads at the high end, around 110-125.

    Fasting BS is usually around 75 – 90.

    What is likely happening inside me that is making my BS high shortly after a good workout?


  23. Can I use the keto diet to strictly lose weight? Can I reintroduce carbs after I reach my goal or would that be bad? I'm kinda scared of trying it due to diabetes running in the family. I'm 22.

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