depression
"I am a 53 year old prostate cancer survivor (radical prostatectomy and adjuvant radiation treatment) with depression/anxiety. 

I started on 150mg of Wellbutrin 6 months ago. Recently started having major depression/anxiety feelings about work. I am now taking 150mg twice a day and I feel great. I cannot believe the difference in my mood from dismal depression to optimism. I also quit smoking and drinking. I've been doing the South Beach diet with moderate exercise (30-40 minutes walking on treadmill) and have lost 20 pounds, but I was about 100 pounds overweight so I have a long way to go. 

I am just a few days into the 150mg twice a day regimen, but the results with respect to mood change have been remarkable."