Fiber
The plant stuff, soluble and insoluble, that keeps you pooping and feeling full.
Definition
The trusty plant stuff, soluble and insoluble, that keeps you pooping and feeling full.
Why it matters
Fiber is half of the equation the book runs on: Water + Fiber = Poop. Insoluble fiber is also the thing to back off during the first weeks and after every dose increase, when digestion has slowed and things linger.
Source: this entry is drawn from “Poop” in FAT BITCH: Killing the Willpower Myth by Cat Clark (UNLIT Publishing, October 15, 2026). The full chapter has the context this page does not. Get on The First Copy List and we send the order link the day it goes live.
None of this is medical advice. It is educational material drawn from FAT BITCH: Killing the Willpower Myth by Cat Clark, and it does not replace your prescriber, your pharmacist, or your actual doctor. If something here does not match what your care team told you, go with your care team and bring this along to the conversation.