What is insoluble fiber? 
Insoluble fiber is a type of fiber which does NOT dissolve in water. 

What does insoluble fiber do?
can help food move through the digestive system
can promote regularity 
can help prevent constipation 
assists with bowel function (3)

What contains insoluble fiber? 
whole wheat products (2)
wheat bran 
quinoa
brown rice 
legumes
leafy greens
kale
almonds
walnuts
seeds
fruits with edible skins
pears
apples (2)

Resources
1. https://www.healthline.com/nutrition/mandarin-orange#benefits
2. https://www.hsph.harvard.edu/nutritionsource/carbohydrates/fiber/
3. https://healthyeating.sfgate.com/definitions-total-carbohydrates-other-carbohydrates-6150.html

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