Methylphenidate - Does Concerta cause weight gain, not loss?

I have been taking Concerta ER 72 MG daily for almost 2 years now. I have always been slightly overweight since my 20's. Now at 45, I've found that I eat much smaller portions resulting in my my weight dropping approx 40 lbs to the "normal" BMI, etc for my height. I believe the Concerta has helped me to obsess less about food and focus on other issues. I don't think about it, it just happened over time, if that makes any sense. We all metabolize food differently. But I can say, for myself, the med has contributed to weight loss. Not in a drastic way. I can still overeat.. And feel miserable afterwards. It has just become a non issue for me. I would assume if I was underweight due to an eating disorder or stress, etc. It would be a definite concern to consider before starting Concerta. Sorry I tend to ramble and am new to forum as well. No weight gain for me. Occasional psychosis like episodes that pass, but that's for a different question. I'm going down to 54MG daily this month. Take care and be blessed.