So, I searched and didn’t see this topic covered yet.
Many of us, pre-Keto, drank sugary sodas religiously. I remember making that second (third?) trip to the soda fountain at McDonald’s too…
When I went Keto, the first thing I did was try and replace those sugary cravings with a cool, crisp diet soda.
This topic is highly controversial in the dieting/Keto world. It makes sense too; we really don’t understand the full effects of diet soda on health, gut microbiome, weight loss, or anything. Most of what we know is anecdotal or in the beginning stages of research.
For example, there are many who believe that ALL diet sodas should be avoided. In Maria Emmerich’s new book, 30 Day Ketogenic Cleanse, she advises abstaining from anything with artificial sweeteners in them. What isn’t clear is if Stevia sodas are included in this recommendation. Of course… I can’t, personally, get behind Stevia sodas because of their taste. Too healthy tasting for me!
There are others, like Adam Nally (Doc Muscles), who believe that sodas with Aspartame are perfectly fine for blood sugar. These four are ok by him: Diet Dr. Pepper, Diet Coke, Diet Mug Rootbeer and Diet A&W Cream Soda. (Source: http://www.sensiblemedicalsolutions.com/sweeteners.html)
The jury is still out on how these artificial sweeteners/natural sweeteners affect blood sugar and appetite across the board. The best we can do, for now, is test ourselves. Try the different sodas and see how they affect your numbers.
For me, I’m lucky that Diet Dr. Pepper is perfectly fine for me. I have two a day. Eventually, I want to get off all artificial stuff, but for now, I feel great.
One other thing from Dr. Nally. Ace-K, the new-er artificial sweetener, is being used to replace Aspartame in many of the diet sodas. He posits that this sweetener causes an increase in insulin levels (without causing a jump in blood sugar levels). This is a problem because it can make you feel hungrier! Your body thinks it is getting more sugar than it is, and this can be bad. When we are trying to reduce insulin resistance, we want to reduce the amount of insulin that is produced. I recommend not drinking any sodas with acesulfame potassium (Ace-K™, Sunette™) in them.
If you have more science/thoughts to add, please do so below! Thanks.
-Connor