Well..I'm not formally diagnosed or anything, I have a lot of dysautonomia symptoms, so i'll share some of my insights. When I was 18, I lost over 40 lbs. rapidly on a diet just by cutting out soda.I think I was developing mild symptoms before then, and for a while I was attributing that to the aftereffects of a REALLY bad infection I had when I was 13-14 or so. Anyway, when I lost all the weight, the symptoms started hitting me full force. So..i'm not sure if weight loss per se causes it ( I was adopted and found out later that I think my one of my sisters may have similiar, if milder, problems) but I think it helps exacerbate it in some cases.Today I saw some study that overweight teens have a drastic drop in their blood pressures after weight loss.Since hypotension is often a dysautonomia finding, maybe gaining a bit would help buffer the blood pressure lows?