Getting Yes and No
Due to a metabolic condition, I been doing Intermittent Fasting and the Ketogenic Diet for almost 6 year.
One of the things that keeps me on track is being able to have a Diet Coke (Diet Drink)
Someone told me that Sweeteners increase Blood Sugar.
Like you I reasearch that. Like you I found studies that said it did and didn't.
Since I need to keep my Blood Sugar in the normal range, I purchased a Glucometer to find out.
My Blood Glucose Readings
Based on my Glucometer, Diet Coke (Diet Drinks) with Sweeteners do not affect my Blood Glucose. If they do, it is not enough to notice.
My Diabetic Powerlifting Buddy
I have a Powerlifting Buddy that is a Type II Diabetic.
He told me that Sweetener jack up his Blood Sugar.
Sweeteners in Coffee & Intermittent Fasting...2 Fit Docs Ran The Tests!
This is an interesting at home experiment that husband and wife Chiropractors did to find out how Sweeteners affected blood sugar.
The Sweetener affected the husband, Keith's Blood Glucose and Ketones to greater degree than the wife, Becky.
Individual Differences
Base on the 2 Fit Doc's experiment and my Powerlifting Buddy and mine, it appears that it may come down to the individual.
To determine how Sweeteners effects, you may need to monitor your Blood Sugar.
Diathrive Glucometer
diathrive.com
If you decide that, you might want to check your Blood Glucose and find out. If so, I'd recommend Diathrive.
It is a cost effective Glucometer. The Test Strips are 8 cents, which is pretty cheap.'
Ketometer
I then purchased a Ketometer to determine if Sweeteners affected my ketone and to monitor my diet
I ramdondly check my Blood Ketones with the Keto Mojo. Since the Test Strips are $1 each, I limit check them due to the cost.
There are some other Ketometers on the market with lower priced Test Strips. However, they are close to the same cost as the Keto Mojo.
Next, I then purchase the Ketonix Beath Ketone Meter. The only cost is the one time purchase. So, I check my Ketone daily with the Ketonix.
Sweeteners don't affect my Ketone Levels.