I don't think I have lost much due to exercise. I have friends who started running and have lost weight but I really do not want to do that. I like going for walks but I don't think that really burns enough calories to matter much.

I have only been drinking sugar free things for several years. I have friends that did that and lost a bunch of weight but that did not happen for me.

Bitt have you went to a doctor about this ? Maybe you have a thyroid issue or a deficiency of something ?