Some do, and some don't. Similarly to sugar alcohols, different sweeteners have different glycemic indexes. Powdered versions of artificial sweeteners like splenda and even natural ones like stevia have added carbs that come from maltodextrin and other fillers, so stay away from those. Here are the best sweeteners to use while on vegetarian keto (all of them have a glycemic index of zero):
Horrible guidance if you’re trying to actually follow a ketogenic diet – many of the recommended foods will quickly push most people out of ketosis. Ketogenic as a Vegan is nearly impossible (if not actually so), and vegetarian is a challenge just because it’ll limit your available protein sources (animal proteins are almost always associated with fat sources as well, and quality choices there lead to “healthy” fats also). You’ll likely still want to be lacto-ovo-vegetarian or you’ll run into a lot of difficulty getting enough protein, even keeping it moderate. But switching out to eggs, upping the EVOO, coconut oil, and avocados, and including whatever dairy you can actually process, should all take care of your protein and fat needs. Just remember to focus on Fat and Fiber, keep overall protein moderate, and avoid all other carbs like the plague and you should be “in ketosis” without having to actually measure anything ritually.
One of the more popular diets trending nowadays is the ketogenic diet. The diet requires you to reduce your carbohydrate intake and in turn, increase your fat intake. The aim of the diet is to get your body to use fat instead of glucose as energy and fueling your body until the next meal. Apart from weight loss, the ketogenic diet has been found to be helpful in managing blood sugar levels, reduces the risk of obesity, epilepsy, Alzheimer's disease, polycystic ovary syndrome and even some types of cancer. Some healthy foods to consume on a keto diet are starchy vegetables, coconut oil, cheese, sour cream, avocado, meat and poultry and high-fat dairy products. Reduce sugar and salt intake. Replace white sugar with palm sugar, jaggery or honey and salt with pink salt or black salt in cooking.