A 3.5-ounce (100-gram) serving of cooked rhubarb with added sugar contains ( 3 ): Calories: 116. Carbs: 31.2 grams. Fiber: 2 grams.
Rhubarb Aids Weight Loss Catechins are known to boost metabolism, and this also helps burn body fat and aid weight loss. Rhubarb is also a good source of fiber, another nutrient important for weight loss. Because of its laxative properties, rhubarb is a prominent ingredient in certain weight loss formations (5).