Prevention

Give fish oil ^a

Why?

• It reduces relapse. ^a There is no clear increase in severe diarrhoea.

Crohn's disease: fish oil reduces relapse

Patient	Treatment	Comparison	Outcome	CER	RRR (95% CI)	NNT (95% CI)
Crohn's disease in remission a	fish oil	placebo	relapse at 12 months	69%	59% (30% to 76%)	2 (2 to 5)