I have heard of people having problems with fiber if they rapidly increase intake or if they don’t drink enough water. I target 1.5 to 2 gallons of water per day.
As you said, everyone is different but you’re just the first one I’ve heard aided by a low fiber diet.
Metamucil can draw water into the lower intestine, which is terrible for some forms of IBS-D. Fibre is worth a try but it's not a magic bullet and can actually cause flares in some people.
I struggle to drink 2 litres. I got frustrated and got an app which will remind me and keep track of how much I am drinking and turns out I am drinking on average 1L. Any techniques you follow ?
My technique is very simple. I bought a water filter jug which I can fill and bring to my desk (I work an office job). Turns out that simply having the water available within reach rather than having to get up to refill my glass helps a lot (and the improved taste of the filtered water doesn't hurt - but this may not be necessary depending on the quality of the tap water where you live).
I’ve never heard of a low fiber diet for IBS. In fact the first dietary suggestion on the non-profit IFFGD’s website is to increase fiber intake:
https://aboutibs.org/treatment/ibs-diet/dietary-fiber/
I have heard of people having problems with fiber if they rapidly increase intake or if they don’t drink enough water. I target 1.5 to 2 gallons of water per day.
As you said, everyone is different but you’re just the first one I’ve heard aided by a low fiber diet.