I lost about 25 pounds during the first month or so of sobriety. I am sure not having alcohol was part of it but I was also depressed and anxious so I had a hard time eating. I also was walking a lot to burn off adrenaline.
I am over 5 months sober now and I have gained most of that 25 pounds back. I am overeating - a lot of sugar - but I am want to get into better shape.
I plan to really start dieting and exercising more in the near future.