This is Bradens and Maksims Project about Fiber and the prevention of disease.  Plus some basic info about fiber. 

Here are some websites if you want to learn more. 

https://www.hsph.harvard.edu/nutritionsource/carbohydrates/fiber/

https://www.mayoclinic.org/healthy-lifestyle/nutrition-and-healthy-eating/in-depth/fiber/art-20043983

https://www.sharecare.com/health/nutrition-diet/what-diseases-fiber-help-prevent

https://www.bmj.com/content/364/bmj.l159

https://www.benefiber.com/fiber-in-your-life/daily-fiber-intake/top-10-high-fiber-foods/