One cup of canned pumpkin puree contains about 7 grams of fiber, which helps support your gut health. May Support Gut HealthFiber is a key nutrient that supports gut health by regulating the gut microbiota and helping promote regular bowel movements. May Support Immune HealthPumpkin is a natural source of many immune health-supporting nutrients, including vitamin C, zinc, and selenium. Finally, since 70% of our immune system is in our gut, supporting gut health by eating fiber foods, like pumpkin, can impact our immune health as well. Pumpkin Nutritional FactsHere are the nutrition facts of one cup of raw cubed pumpkin, according to the USDA.