I am 26 years old and I have never been thin. But... I got married three months ago, and have already put ten pounds on!! I am trying to get into a healthy eating habit for many reasons...listed in my journal! I ate pretty well before I got married, but adjusting to the new life has been no good for the jeans! I am hoping to lose about 25 lbs...or more if it goes well, and get back to my normal weight...not necessarily thin. The doc says it sounds like I definitely went through a chemical change, as there have been other changes with my body too, so I'm going to give this an honest effort, and see what comes of it!