You need to move away from the fast food table and get some exercise.
Do you live in the states? Stay away from high fructose corn syrup. That stuff seems nasty!
Good. Then we're starting to make a diagnosis. I know that your change may not be considered a bad thing in your eyes, but short term pleasure as a trade-off for long term suffering and health complications doesn't seem like a good trade to me.... Look after yourself, man. Think of the children!
The you've still time to reset your body and make a positive change. That is if you want to...