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https://www.webmd.com/diet/guide/fiber-how-much-do-you-need#1
"You probably know that fiber is important to good health, but do you know if you are getting enough?

Most Americans aren't. The average adult only eats 15 grams of fiber per day.

Women need 25 grams of fiber per day, and men need 38 grams per day, according to the Institute of Medicine."...!