Since you appreciate my opinion have you tried the 6 tbls. of ground chia with the other dietary suggestions and magnesium at night as needed. I have no experience or opinion on palm oil and constipation other than I see no reason for me to use it.
I don't have IBS-C.
I probably haven't experienced much constipation since year 1/2 of my IBS which started 9 years ago.
However, I do think and agree with you that finding good fibers are essential for a long-term IBS manageable lifestyle.
The friendly fiber that worked best for me was actually a decent portion-size (~500 ml well packed) of spinach.
I still used this fiber today.
This helped me to recover when I couldn't tolerate most other fibers, which I love and find delicious.
Ex. Cabbage, bok choy, broccoli, cauliflower, peas
While I had IBS for years 1-5 or 1-7, I couldn't eat much of these. I avoided them from yeas 1-5, as I found out quickly during year 1 that I would get non-stop gas from the above, so I didn't touch it till I felt that I was gettingbetter on my IBS (from various treatments of antibiotics/antifungals/anti-partisitics, elimination diet, and probiotics in combination).
I think between years 5-7, after I had my most effective round of treatment (first round of xifaxan + heavy probiotic combination), I found I was able to eat foods that previously would cause problems (gas, diarrhea, loose stools).
Slowly, I was able to test and successfully add my favorite veggies cited above (cabbage and broccoli
But the first one (outside of cooked celery in a broth) was spinach. Before my cabbage no longer caused me gas, it was spinach that was gentle enough to not cause gas fo rme, AND still cause a bowel movement.
Metamucil caused gas for me.
Chia seeds (not ground) caused A LOT of gas for me in the past.
At this point, I'm much better, and in fact some would think I don't have IBS as for two years I haven't suffered from any major upsets (except one very recently, which I thought about writing in a post, if anyone cared... but hardly anyone replies to my posts so maybe not?).
So, maybe when I'm sure i'm 100% out of a recent upset (I'm getting a slightly loose stool every 3/4 days right now). I may try it, just so I have an alternative intestinal cleanse.
But yeah, I just wondered if grinding the seeds caused something to be different in terms of how they were digesting in the body. All i can think of now is that there would be a higher surface area, hence the better/more through cleansing effect you experienced.
And I'm happy you shared, not every fiber works for everyone, but it may help others. In my opinion, its always good to know things that have helped others, because there's a chance it could work for you. And if you've already tried things you do know about, it doesn't hurt to learn about what others have tried.