Hi, I seem to have stalled in weight loss. Sticking to 2 to 6 hour eating window and LCHF.
I usually put about 1-2 table spoons of butter in my morning coffee, having a cup at 5 am and another at 9 am.
Is it possible that the butter is killing my IF early each day?
Carbohydrates and protein raise insulin with protein having about 1/2 the effect, but it is often overlooked that fat also raises insulin to a small degree, what doesn’t seem to be known is how variable that effect can be and whether or not it is something else in the butter that can be affecting it besides the fat since butter is still dairy.
Personally, I think the effect of 1 to 2 tablespoons of butter on insulin is probably not the issue, but it is possible, especially when people start melting entire sticks of butter in their coffee. For you, more than likely it is something else in the butter, so you might try ghee (clarified butter) instead as a test.
Personally, I don’t like ghee and use coconut oil and/or MCT oil instead of butter when I’m having a fatty coffee to get me through a low-energy period.
Protein has about half the effect on insulin as carbs? That seems high…especially when coupled with natural fats, as in a fatty steak.
Dr. Phinney has said that when calculating the effect of diet on insulin to use carbohydrate grams and 1/2 the protein grams.
So both coffees (5am and 9am) have 1-2 tablespoons of butter (100 calories for each tablespoon) ? This doesn’t seem like IF, or is your eating window between 5am and 9am ?
Where are you on your weight loss journey? What is your diabetes and IR status?
If you have lost a significant amount of weight and are IR resistant you may have come up against your basal insulin level. In this case you will need to develop a strategy to further drive down your basal insulin levels.
Heavy lifting, HIIT, and extended fasting are typically the recommended methods for doing this.
@Bill_Cube, that’s correct. I was under the impression that something like BPC was allowed outside of eating hours on IF.
I’ll experiment with going black only now.
I’m not sure how to measure or asses IR.
I lost about 22 lb during a 14 day water far that ended 1 week ago. I have about 48 lb to go to get to my goal weight.
Measuring IR isn’t easy.
There is a formula that involves a fasting BG and a fasting insulin reading from the same blood draw. This would require lab work. I tried searching the formula to no avail. Perhaps @richard has it handy.
I do remember one of the gurus saying if you are obese you are pretty much assured of being IR.
A little (note I said little 
) butter in your morning coffee when IF should be fine if you feel you need the energy boost. Just remember when fat adapted, the more exogenous fat you eat the less body fat you burn for energy.
The HOMA is displayed in this web graphic:
HOMA Graphic Link
I have 45-50 to go too Jeff. I begin my longer fast each week with the BPC with 1 T butter and 1 T coconut oil because the satiety helps me go much longer without any serious hunger issues.
My doc would not approve resting insulin and resting glucose combined testing stating it is not helpful enough to be worth the expense with my insurance. He explained that if I continue to work towards lowering my resting bg, so any dawn effect dumping slows down, that this is a clear indication of healing IR. He stresses to me all the time about how “staying the course over time is what works” because it is a slow process. I didn’t get so IR quickly and it won’t go down any quicker than the years I worked to raise it. 
To assess your insulin level or level of or, go to https://optimisingnutrition.com
and have a look around. This guy will tell you how do do it based on your bs and blood ketone levels. It is bs divided by bk.
I am finding IF to be my best help, with no BPC for breakfast. When I do a 24 hour fast the impact is more significant. I am planinng some longer fasts over the next few months as I too have a weight plateau and my BGL’s also won’t go lower than about 5.3 but generally in the 6’s. I suspect my dairy input and fat generally is too high.
I think you meant this link to be Insulin Load. But this is about insulin load and not insulin level in the body. It’s basically that about protein being 54% insulinogenic in addition to any ingested carbs.
My weekly 36-40 hour fast is easy starting with a BPC and ending BPbroth. I am having phenomenal results and wish the same for all T2Ds!! 
@Bill_Cube having fat only during the fast period, a la Bulletproof Coffee, is one type of IF protocol. The theory is that since the insulin spike is reduced due to lack of carbs or protein, some benefits of the fasting state is preserved. Additionally, people find it can help with satiety and energy so maintaining their deficit is easier. We’ll need more good human studies before we really know what type of IF is “best”.
@gtdjeff ya the BPC is one type of IF, but other protocols call for near zero calories during the fasting period. When you say you’ve stalled, how long are we talking?
If you are like me, caffeine in the form of coffee can trigger a blood sugar response. In my case it is material. I believe it stimulates cortisol.
More here on caffeine https://www.ketogenicforums.com/t/caffeine-and-blood-glucose/5286
Sorry for questioning this-but wouldn’t that be assuming the CICO model? I’m bad at remembering specifics from the podcasts I listen to, but Dr Adam Nally doesn’t see it that way ( & it’s one of the things that confuses me the most-I feel like I should eat less fat-so my body will burn more…) however, I believe calories/ fat are burned at a “cellular” level. No need to cut fat to burn it… I’ll try & fond which podcast refers to this & link it for you.(if I can get back here)
