I’ve chewed gum for years doing IF and on longer fasts. Have lost 20 pounds and kept it off doing this. I chew trident white the entire day and occasionally sleep with it! Fasting for weight loss has never been affected by this.
If you’re looking for a brand that avoids the “naughty” sweetness try Pur Gum. There’s 2 ingredients Xantham Gum and Xylitol.