The Claim

In adults with irritable bowel syndrome, higher levels of pain catastrophizing are associated with a reduced therapeutic benefit from open-label 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

Adults with irritable bowel syndrome who experience greater feelings of helplessness and hopelessness about their pain show less improvement when given a transparent placebo treatment.

See the scientific wording

In adults with irritable bowel syndrome, pain catastrophizing is associated with reduced benefit from open-label placebo, suggesting that feelings of helplessness and hopelessness may interfere with therapeutic responses to transparent, self-directed interventions.

Why this might work

When a person feels hopeless about their pain, the brain reduces natural pain-relieving chemicals, making it harder for even honest placebo treatments to activate the body’s own pain control system.

Suggested 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 feel hopeless about their pain didn’t improve as much when they were told they were taking a fake pill, even though the pill worked for others. This suggests that feeling helpless can block the power of being honest about treatment.

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

Fit Body Science verdict — we translate health claims into clear verdicts backed by peer-reviewed research.

Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.