We recommend that people use natural sweeteners whenever possible. For natural sweeteners, stevia, erythritol, monk fruit (luo han guo), and a new one called allulose are the preferred choices. Inulin is also common, but many people don’t tolerate it well from a GI perspective. In terms of artificial sweeteners, the best choices are raw sucralose and aspartame. These are commonly found in commercial artificial sweeteners, but they include ingredients such as maltodextrin and dextrose—sugars—so the raw versions are best.  However, some data indicates that artificial sweeteners may have an impact on the gut microbiome, so it is best to opt for natural sweeteners when possible.