Inflating Belly Syndrome

Yeah, like many I am too suffering from my inflating belly. I have inquired a lot and can't figure out the root cause behind it.
No its not because of beer or liquor consumption. Neither am a big time junk foodie. Yeah I do like to have butter, creams, ghee in my food but they are occasionally part of my food. Specially when I m living in a hostel which serves food like the one given to some refugee camps or to the beggars of temple.
Also I do lot of physical exercises, play badminton and run a lot.
Finally a driver of our vehicle for our routine CSR activity at college told me the reason. "Its in the water and air of GOA. You can't do anything about it". Strange whole time I was cursing my past IT job, for always making me sit on a chair and work, for this condition of mine. And here I got a reason totally out of the world. Yes, at one time I used to be very lean and flat stomach boy. At least till I was in my college. I started gaining weight when I came to my job. All work and no play. And this all work was almost sitting average of 12 hours daily over a chair in front of a computer screen. Even then it was fine but later on the rate of my belly inflation became exponential when I moved to GOA. Children call me uncle, my fresher colleague find me too old and my friends tease me for the same. Although everybody has gained some but mine progress was far faster than everybody else.
I must have put a before and after pics of mine belly over here to show you the contrast but I am feeling ashamed to do so.
My only target this year (can be considered as my new year resolution) to regain my flat stomach if not some packs :).
But just a minute, not every one is unhappy about that, there are some people who are happy about it, like my mom and aunt who claim that now you are looking like a perfect man. In fact they serve me all the things dipped in oil,butter or ghee so that I can enjoy them fully and make my stomach gully-bully. I mean what the hell is this. Few say its fine while few point it badly.And if going by what my driver says then nothing can be done towards it and only time can heal it when I will reach to a place where there is no effect of air and water on my belly inflation.