FYI, you do expect your absolute snythyroid dosage to go down as you lose weight, not because of increased fitness, but becasue dosage is really per unit of body weight. My dosage also went down as I lost weight, but only proportional to my weight loss (although it sounds like yours went down more than that).
Exactly - my weight fluctuates regularly depending on how much I ride and how much attention I pay to what I eat. My dosage goes up and down in kind.
Sarah
When it's easy, ride hard; when it's hard, ride easy.
2011 Volagi Liscio
2010 Pegoretti Love #3 "Manovelo"
2011 Mercian Vincitore Special
2003 Eddy Merckx Team SC - stolen
2001 Colnago Ovalmaster Stars and Stripes