For people who have trouble pooping and feel bloated, stopping all fiber-rich foods like veggies, fruits, and whole grains for six months helped them poop daily, stop straining, and feel less bloated.

People with chronic constipation who cut back on fiber (but didn’t eliminate it) started pooping almost daily and felt less strain and bloating after six months.

People with chronic constipation who kept eating lots of fiber (like whole grains and veggies) for six months didn’t see any improvement—they still pooped rarely and felt bloated and strained.

People with constipation who kept taking fiber pills or eating lots of whole grains didn’t feel better—even if they tried to change their habits, the fiber kept them feeling the same.

People with constipation who ate no fiber stopped straining to poop, while everyone who kept eating fiber still had to strain hard.

People who cut back on fiber didn’t just feel better right away—they kept feeling better for at least six months.