The Best Answer
Okay it does not stall fatloss. Yes there are some studies that show an increase in insulin response to some sweeteners but sucralose and apsartane are low to none. The other thing to keep in mind - there is no mention in these studies of the length of spike - and if you are eating low to no carbs at the time, there are no carbs to be converted to glycogen...which is what stops the use of fat stores as energy.
Splenda has been shown to kill the good bacteria in your gut so I would take a pro-biotic if you do take a good amount of splenda.
You have to take all these studies with a grain of salt and think who helps fund them.
That's right, most protein bars and shakes contain sucralose, acesulfame potassium, and/or aspartame, including No-Xplode, one of the Geek to Freak supplements. All artificial sweeteners, whether they stall fat loss or not, can be potentially hazardous to your health if taken for long periods of time. I would try to keep it at 1 serving per day, as in 1 soda, shake, bar, etc per day max. Aspartame supposedly has the least effect on insulin, although it apparently makes the body crave more calories. So pick your poison sparingly, and gradually make an effort to eliminate it altogether. Even Stevia, which I usually use, has an effect on insulin.
Like TF says, experiment. I have never had a problem with artificial sweeteners, until this year. I could live on diet pepsi and whatever else I wanted and have never had a weight problem. This year I started bloating and gaining weight and in terms of my body behaving as I expected it to - everything has changed.
I cut out all sweeteners at first, and then just tried adding a few - in my coffee, diet pepsi's while traveling in foreign lands and I'm a gum-chewing addict. I definitely notice a big difference in not only my weight fluctuating but a terrible belly bloat when I use them. The hardest thing to lose was the gum, although I get a muffin top the day after indulging in gum every time. I keep pretty extensive logs and it is sadly obvious to me that I cannot do artificial sweeteners (sigh).
The good news is, my first cheat day, I found that I no longer even like my artificially sweetened vanilla creamer that I used to drink in huge quantities in my coffee. I have had a protein bar or two when in odd countries and unable to find something to eat, but I always come back up a few pounds similar to a cheat day. My alternative to gum is an occasional spray of natural peppermint and cinnamon oil that at least makes my mouth feel fresh before a presentation or getting on a plane or whenever I would normally pop in a piece of gum.
I'm glad you posted this! I will give up many things for health and vanity, but I really didn't want to have to stop using splenda or switch to stevia. For me I'm going to try and stick with my splenda and take a pro-biotic. I'm on week one of the diet so I won't really know if it is slowing my progress. If within two weeks I do not see changes, I'll make a few adjustments.
Everything I've read about erythritol makes it seem like we can avoid all of the negative effects associated with other types of sweeteners. I don't know why it isn't more widely used. It has essentially no impact on insulin or blood glucose. It's even good for you in the sense that it has antioxidant properties. Best of all, I think it tastes most like sugar compared to any other sweetener I've tried.
Join the 4 Hour Body Superhumans!