Q: Smoking decreases the risk of recurrence in Crohn's Disease (CD)?

A) True
B) False


Answer: False 

There are four types of recurrences in Crohn's Disease

• Histological
• Clinical, 
• Endoscopic, and 
• Surgical 

Smoking increases the recurrence rate of all types of CD. Post-operative advice against smoking is essential in CD.


References:

1. Ryan WR, Allan RN, Yamamoto T, Keighley MR. Crohn's disease patients who quit smoking have a reduced risk of reoperation for recurrence. Am J Surg 2004; 187:219.

2. Reese GE, Nanidis T, Borysiewicz C, et al. The effect of smoking after surgery for Crohn's disease: a meta-analysis of observational studies. Int J Colorectal Dis 2008; 23:1213.