How to Interpret Your Blood Sugar & Ketone Numbers While Fasting

This was so helpful Dr. Mindy! I have followed you since 2020, but somehow missed this video. My body has muscle memory of fasting, but I fell off during menopause and series of family losses. I am back in the game!! I feel like this time is the strongest I have ever been and learning from you, Dr. Berg, Dr. Eckberg and newly found Dr. Jamnadas have helped me develop a winning strategy. I do appreciate you explaining the different phases and, honestly, I think that was one of the missing pieces that discouraged me in the past. Thank you, again, for all that you are doing to equip us to find our freedom from the inundation of disinformation, coercion between processed food manufacturers & big pharma, etc. I have incorporated infrared sauna to my fasting program and loving it. Blessings to you and yours!

I'm fighting cancer via Keto. I've got Keto-Mojo Meter & the recommendation is 2.0 GKI (glucose/Keytone) reading. For those using that meter, what reading is a danger zone?

Pattern #3 here! Prediabetes with A1c of 6. Blood sugar hovers around 103-118 but my ketones are 2.3

Hi, awesome video thank you. What’s a normal bump in glucose after a meal? I went up 28pts yesterday after having my dinner (lentils, sausage, lotsa green veggies, strawberries n cream (no added sugars) I know you can’t say exactly but my KetoMojo reader wasn’t too happy with the 115mg/dL reading so Im trying to understand what is a good bump - thanks!

👋 new to keto health and your channel. My first reading (afternoon) of keto level was 2.2 mmol/L and BG 4.3 mmol/L (80 mg/dL) 🇦🇺
My BG levels sits at 4.3 most of the time. I'm guessing I'm in patterns 3?

Great information! Just started tracking ketones. I've fasted on and off for about 18 months now and my results have varied. I'm ready to really try to figure out what my body is telling me. Wondering what it means if my ketones go lower between wake-up reading and right before my first meal? I was at .8 when I woke up, and now I'm at .4. I drank some warm water with ACV and lemon and had a cup of coffee with a bit of heavy cream.

AI Overview







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A blood sugar level of 80 mg/dL is equal to 4.4 mmol/L, and a blood sugar level of 90 mg/dL is equal to 5.0 mmol/L. 

Explanation

To convert mg/dL to mmol/L, you can divide the mg/dL by 18. To convert mmol/L to mg/dL, you can multiply the mmol/L by 18. 

Blood sugar level ranges

A fasting blood sugar level between 70 and 99 mg/dL (3.9 to 5.5 mmol/L) is considered normal for adults without diabetes. However, many factors can affect blood sugar levels, and it's normal for them to fluctuate. 

Blood sugar monitoring

Blood sugar, also called blood glucose, needs to be tightly controlled to reduce the risk of complications. Morning fasting blood sugar levels can indicate insulin sensitivity and long-term health outcomes. 

When to consult a healthcare professional

Before making significant dietary or lifestyle changes, you should consult with a healthcare professional or registered dietitian. 

Conversion Table for Blood Glucose Monitoring - The DANII Foundation



The DANII Foundation

IS THIS FUCTIONAL MEDICINE?

I've made an experiment. Last night, just before I went to bed, I measured both glucose and ketones. Glucose was 5.2 mmol/l and ketones 1.6 mmol/l. This morning I measured both markers again approximately 2 hours after awakening. Glucose was 6.4 mmol/l and ketones 0.2 mmol/l. I ate or drank nothing in between, except about 0.5 l of water.

Great video as in really easy and understandable way explained what happened with my ketone level while I was in 72h was and went to gym , thanks Dr Mindy

After 22 hours of fasting my blood sugar is 88 and ketones are 0.3… I was diagnosed with fatty liver cause I was taking the pill… I’m 26. Any suggestions?

I just watched an interview/podcost with The Insulin & Glucose Doctor on The Diary of a CEO. This has been the most informative interview/podcast I have ever seen to explain insulin and glucose and the wonders of keytones.

I just tried the 24 hr fast. At 20 hrs my blood sugar dropped to 60. Is this dangerous right now?

I need this for england it is difrent like 4.5 up to 5.5

I worked my way up from 0,1 to 0,5 Ketons (measured with Keto Mo Jo)
Morning BS went down from levels of 90s to levels of 80s..

Thanks

Can a sugar dump happen at anytime? I woke up at 4.1 mmol and after exercise and coffee with tsp of butter sugar went up to 5.1 (butter was only change) and ketones were good -still is ketosis despite blood sugar rise. Wondered if it was the butter or if it was a sugar dump?

Am a new person to your channel and a prediabetic, pls. I don't have any ideas about ketones, can I get the details of it. I have been doing water fasting in the mornings.

Give me stress management tools please. 😊

I woke up the morning at my ketones were 3.3

Just started testing my ketone and glucose levels and this was a really helpful video-cuz I was kinda mad this morning 😂

Excellent information . I'm a faily stressful person.

great breakdown - thank you!

Does Dr. Mindy have a video on measuring ketones on Nurture Phase without getting shocked by glucose?😂

372 days carnivore. Carbs 5grams once in a while 12grams. Not diabetic 0r insulin resistance . MOJO shows my ketones dropping fro.2.2 to 0.8. Blood sugar never below 103. What the heck is going 9n?

I'm so glad I found you. Thank you!!!!

Excellent video! Answers all my questions 😊

What about illness and injury?

Fasting varying fasting eating ketobiotic for 5 weeks now using ACV before eating and my cgm shows high Glucose Levels ketones low and glucose rises and rises and rises. I have Done longer fasts trough 52 Hours and couples of 48hours as well than mostly 19-24 hours and now 12-15 hours. I sleep a Lot. Lots of meditation. I walk a lot. What am I doing wrong? I am desperate. I started detoxing my heavy metals and blood glucose was today at 178! I am Not a diabetic. Have I caused any insulin Resistance through all that fasting? Please HELP!

Getting up to 8.0 unless you’re diabetic I would say almost impossibly high to reach for most
I’ve never gone close personally
But it’s good to monitor

Hi mindy, hoping you can clarify info in video, you mention reading #2 is "right before first meal" but the example you give for pattern 1 is a reading after a person eats? Could you clarify please! Is there three readings 1. Waking 2. Right before first meal then 3. 30 minutes? or some amount of time after first meal. Sorry im confused maybe ive missed something but between which reading should blood sugar ideally go down, keytones go up? Many thanks

Stay the course!

I am doing a seven day fast. I woke up yesterday with blood sugar of 63, throughout the day it went down to 59 and 62. This was the third day. On my fourth day my waking up blood sugar was 42.I am 73 years old, in good health, on no medication.

Very helpful. Thank you

This is a great explanation. In 2025, a BG/Ketone test using the two strips with Keto Mojo costs $1 each time. That can really add up.

Which ketone, blood sugars monitor do you recommend

I am not fully through the fast like a girl book and have started fasting and was wondering about the glucose and keto monitor I've been hearing about so thank you for answering my questions

Awesome content.
Thank you.

Super helpful! Thank you Dr Mindy!

very helpful. Thank you!

I just bought a keto-mojo meter and used it today on a 24 hr. fast. I really appreciate this video because it explains so much of what to look for and how to understand the numbers. Thank you so much! I am so glad to keep learning about how the body works!!

One of my first 24+hr fasts in a long time I was using my new MOJO and also saw an increase overnight test results, taking me out of ketosis. This info is so helpful to understand the body and fluctuations we see....thank you! ❤❤❤

Question. If blood sugar high at every reading, over 100, and ketones dance around .4-.8 is that scenario 3 or 4?

This morning: 99 BS & Ketones 0.7 and checked 2 hours later before I ate: 116 BS and Keytones .9 (pattern #3 and pattern #4). I have insuline resistence so this is a very disciplined/dedicated practice. I eat from 10 am - 3 am and do Carnivore - I do a sardine fast once a week, and a bone broth once a week. I did carnivore for 20 months lost 30 pounds the first 5 months (1/2 of what I needed) but zero loss for the next 15 months, I went back to Keto and gained my 30 pounds back in 5 months. I started Carnivore again May 1st and trying to get fat adapted. I am a holistic healer the last 40 years and have dedicated every week for 10 to 12 years on each of my body and since 2018 I have been working on my last body (physical body). This has just been my lifetime I have had to heal every body 100% or die (as a shaman and exorcist, a very stressful fated calling).

My GKI is definitely lower than 8. Since doing keto, I’m often around 2.0-3.0. I feel my best when those are my numbers. I do not, and will not use a doctor during this lifestyle changed. I think it’s important to listen to our own body and do what is necessary to feel good. I work out fasted, too. It feels good to do that. I’m 45, have had 8 children and am down 15 pounds in 2 months. Feeling good! For 40 pounds to go.

What is a good coffee cleanse?

I thought that ketoacidosis was something that was only an issue with diabetics. My ketones are usually around 8 but often get over 10. Keto has gotten me out of hypertension.

Excellent video! It really helped me understand what to look for with my glucose and ketones (in 2025)! I will definitely be back to watch more of your videos!

Thank you

What about a 55 BC in ketosis? Got freaked out and drank some juice because Google told me I was hypoglycemic.