For obese patients, losing weight may require a different solution than calorie reduction and exercise, writes a formerly obese physician in CMAJ (Canadian Medical Association Journal). Despite having detailed knowledge of the negative health effects of obesity, Dr. Ben Williams, now a family medicine resident, could not lose weight beyond short-term losses. \"Losing weight was the easy part, keeping it off was the challenge,\" he writes. \"Oh, and I exercised a lot too; I just ate a lot more.\" He credits bariatric surgery for his success at shedding 110 pounds and counting from his original weight of 320. \"I was fat because I ate too much, and my surgeon helped me do what I had been unable to do on my own.\" Dr. Williams notes, from first-hand experience, that advice to patients to exercise more and cut calories may not be effective and that other solutions may be necessary.