This topic is popular because everyone can relate.
Most people are overweight and to read about someone successfully losing weight is motivational.
Some people think about exercising and eating right (a lot of people make New Years resolutions), but never actually do anything.
There are all kinds of diets, books, exercise regimes/routines, etc.
It takes discipline and dedication to stick to what works for a long time.
If you go too far, it may become an obsession. Everything must be in moderation.
Some people have an opposite problem of being able to eat anything and not gain weight.
I am on one of those "sea food" diets - all the food I see, I want to eat.
It is like the "revolving door" diet - everytime I turn around I want to eat.
The fitness expert Covert Bailey says "It does not matter what you eat - as long as you burn it off".
It is extremely hard to gain weight, if you burn more calories than you consume.
Keep up the good work , all you dieters and lose those unwanted pounds.