It seems that there are more and more reasons why some people are supposedly doomed to remain overweight despite efforts to improve their health. Among the possible excuses that can be invoked are glands, genetics, happy events, unhappy events, stress, influences from friends, and childhood eating habits. Want another excuse? It's been recently found that even a virus that can contribute to obesity.
Check out the article "Why Fatties Say Everyone's to Blame but Themselves." The title is a bit cruel, the message is a good one: Despite the numerous excuses that exist, in the end most overweight people are simply not eating well and getting enough exercise.