MHi I was at the end of my 25th year when I was dxed. I was not unusually skinny either. If I was not working full time I put on weight, and for most of my life I have been thick but not obese. Lol, the only time I can ever remember being skinny was in my early twenties and I worked 2 jobs, 7am till 11pm.
I carry a classic and a nonclassic gene.