I lost a ton of weight when I started HRT. I went from 175 pounds to 136 in like 4 months. That happened in the beginning of last year, and so far I have stayed at exactly 136. I did not exercise during the time of weight loss so it must have been caused by HRT. I will say that I used to consume a lot of sugar, but I cut it all out so maybe that has something to do with it.