The Claim

In adults with irritable bowel syndrome, open-label placebo treatment is associated with greater symptom improvement among individuals with high visceral sensitivity and low pain catastrophizing, indicating that psychological traits related to symptom-specific anxiety and cognitive flexibility uniquely influence response to transparent placebo interventions.

Source: Psychological Predictors of Response to Open-label versus Double-blind Placebo in a Randomized Controlled Trial in Irritable Bowel Syndrome

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
71score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Correlation
1 study reviewed
In plain English

Among adults with irritable bowel syndrome, those with high sensitivity to internal bodily sensations and low tendency to dwell on pain experience greater symptom relief from open-label placebo treatment, and this difference is linked to their levels of anxiety about symptoms and ability to adjust thinking patterns.

See the scientific wording

In adults with irritable bowel syndrome, open-label placebo treatment is associated with greater symptom improvement among individuals with high visceral sensitivity and low pain catastrophizing, suggesting that psychological traits related to symptom-specific anxiety and cognitive flexibility may uniquely influence response to transparent placebo interventions.

Why this might work

When a person with a sensitive gut and a mindset that doesn't fixate on worst-case outcomes is told they're taking a placebo, their brain activates natural pain-control pathways that reduce gut signal intensity, leading to fewer symptoms.

Supported mechanismbased on 1 study

What the research says

1 study

  1. Study: Psychological Predictors of Response to Open-label versus Double-blind Placebo in a Randomized Controlled Trial in Irritable Bowel Syndrome

    People with IBS who are very anxious about their gut symptoms but don’t feel hopeless about them improve more when they’re told they’re taking a fake pill — because knowing it’s fake but still feeling in control helps. The study proves this exact group responds best to honest placebos.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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