Hi. I have recently been diagnosed with Hashimotos after pushing for thyroid investigation for years. Over the past few years I have gone from a dress size 8 to a 16 with no change to my diet or lifestyle. I have all the classic symptoms of hypothyroidism including: steady increasing weight gain, extremely heavy periods, dry skin, badly ridged nails, thinning eyebrows, depression, anxiety etc. My TSH levels are dropping and my Thyroid Peroxidase antibodies are currently at 55.0 (0.0-0.6) is the nornal range. My doctor is reluctant to start me on Levothyroxine because my TSH is within the "normal" range but I have a horrible feeling that damage is being done to my thyroid and it will stop producing TSH altogether if left untreated. Has anyone undergone preventative treatment? Do you think Levothyroxine would help with my symptoms and help me lose weight? Thanks, Aimee.