Oct 11, 2026 · 14 min · 9 segments
A week or two back I did an episode on the small intestine spasm seen in 100% of endo participants in a study on endometriosis and SIBO.(1) Last week I shared about this observation on Instagram and…
Jessica DuffinHost
So a week or two back, I did an episode on the small intestine spasm that was seen in 100% of endo participants in a study on endometriosis and SIBO.

Now, last week, I shared about this observation on Instagram, and the post went wild.

It had 100,000 views, hundreds of comments, thousands of saves, and so many of you wrote to me to say that you get a spasm-like pain in your intestines overnight.

Now, I'm gonna do some more digging, as I've never come across more research looking into this issue since that study, which was done in 1998.

So older, it's not super old, um, but, you know, old enough that we would like some updates.

I could have certainly missed some of the newer studies, so I will look again, but in the meantime, it's clear something is going on, and many of you are suffering.

Because even if we don't have newer research confirming these findings, so many of you are like, "Oh my God, this is me.

No one can tell me why it happens." I'm going to do another episode on other intestinal spasms that could also be happening during the night because based on the messages I was getting, I think some of us are having different experiences, and I have some thoughts about what they could be.

But today, I want to do a short episode on the main motility tests that we can get for the small intestines that I advise my clients to discuss with their doctor.

So a week or two back, I did an episode on the small intestine spasm that was seen in 100% of endo participants in a study on endometriosis and SIBO.

Now, last week, I shared about this observation on Instagram, and the post went wild.

It had 100,000 views, hundreds of comments, thousands of saves, and so many of you wrote to me to say that you get a spasm-like pain in your intestines overnight.

Now, I'm gonna do some more digging, as I've never come across more research looking into this issue since that study, which was done in 1998.

So older, it's not super old, um, but, you know, old enough that we would like some updates.

I could have certainly missed some of the newer studies, so I will look again, but in the meantime, it's clear something is going on, and many of you are suffering.

Because even if we don't have newer research confirming these findings, so many of you are like, "Oh my God, this is me.

No one can tell me why it happens." I'm going to do another episode on other intestinal spasms that could also be happening during the night because based on the messages I was getting, I think some of us are having different experiences, and I have some thoughts about what they could be.

But today, I want to do a short episode on the main motility tests that we can get for the small intestines that I advise my clients to discuss with their doctor.
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