I met a woman who gained weight with Graves, and when she finally figured out she had Graves and got treatment, she actually lost weight and returned to her normal size. I was the opposite–got very thin w/ Graves, and then w/ treatment gained a little beyond what I am used to. Now that I’m off meds (thyroid levels and antibodies are all back to normal), I am back to my usual weight. Every story is different it seems. Good luck getting your health back.
