Combined Treatment for Obesity and Depression: A Pilot Study

Area of Science:

• Behavioral Medicine
• Psychiatry
• Cardiology

Background:

• Obesity and depression frequently co-occur, increasing cardiovascular disease (CVD) risk.
• Individual treatments for obesity or depression may not fully address the interconnectedness of these conditions.

Purpose of the Study:

• To compare the effectiveness of behavioral weight control (BWC), cognitive behavioral therapy for depression (CBT-D), and a combined BWC and CBT-D treatment.
• To assess improvements in weight, mood, and CVD risk factors.

Main Methods:

• Seventy-six participants with obesity and major depression were randomized into three groups: BWC, CBT-D, or combined BWC+CBT-D.
• Participants received 18 group sessions over 20 weeks, with assessments at baseline, weeks 8 and 20, and a 46-week follow-up.

Main Results:

• At 20 weeks, the combined treatment group showed significantly greater weight loss (5.2%) than the CBT-D group (0.8%).
• All groups demonstrated significant improvements in depression scores and 10-year CVD risk, with no significant differences between groups.
• These improvements were not significantly different across groups at the 46-week follow-up.

Conclusions:

• Behavioral weight control (BWC) alone achieved short-term improvements in weight, mood, and CVD risk, comparable to combined treatments.
• The findings suggest BWC may be a sufficient intervention for short-term benefits in this population.
• Replication with a larger sample size is recommended to validate these results.