Changes in Smoking Behavior Before and After Gastric Bypass: A 7-year Study

Area of Science:

• Bariatric Surgery Outcomes
• Addiction Medicine
• Public Health

Background:

• Smoking behavior following bariatric surgery is not well-documented.
• Roux-en-Y gastric bypass (RYGB) is a common bariatric procedure.
• Understanding long-term smoking trends post-RYGB is crucial for patient care.

Purpose of the Study:

• To assess smoking history and behavioral changes one year before to seven years after RYGB surgery.
• To identify predictors of smoking after RYGB.
• To provide insights into long-term smoking cessation or relapse patterns.

Main Methods:

• Prospective cohort study of 1770 adults undergoing RYGB between 2006-2009.
• Annual self-reported smoking status and behavior collected for up to seven years post-surgery.
• Statistical analysis to identify risk factors for post-surgery smoking.

Main Results:

• Nearly half (45.2%) had a pre-surgery smoking history.
• Smoking prevalence decreased significantly by surgery but increased to 14.0% by seven years post-op.
• Relapse was the primary driver of increased smoking prevalence; younger age, lower income, and illicit drug use were associated risk factors.

Conclusions:

• While many patients quit smoking before RYGB, a significant rebound in smoking prevalence occurs within seven years, largely due to relapse.
• Identifying and addressing risk factors for post-surgery smoking is essential.
• Long-term monitoring of smoking behavior is recommended for RYGB patients.