funkyzoom Asked: Need to become slim. Best answer 10 points.?

I'm 25 year old male, height 5'7" and weight 70kgs. I guess I'm around 10 kgs overweight. But in appearance, I look as though I'm 30 kgs overweight. There are fat deposits all over my body, especially near my tummy, buttocks and I also have double chin and nasty love handles. I was very slim until I was 17 years old, but after that I suddenly began gaining weight. Got thyroid test done, but found no problems. I'm not someone who eats a lot, so I don't understand why I became so fat. I'm a vegetarian. People have suggested gymming to reduce weight, but I know that if I start it, I have to work out throughout my life because if I stop working out, I'll regain weight again. What else can I do to reduce weight, apart from working out? Will walking or jogging help? I don't think my diet is a problem, because I don't usually eat fatty foods. And how bad is my obesity? Am I overweight, obese or very obese? And will I be able to reduce weight and become slim again?

P.S. PLEASE, for heaven's sake, don't give rude answers like I'm lazy to work out. That's not the reason. I can work out now, but I'm not sure after several years down the lane. Suppose i work out for several years, then I'm unable to do it for a couple of months and during that time I become fat again, that sucks.