@kpryor1982 0.9 is way too low. Get it up to around 5.0 and see if your symptoms ease. Also 0.9 should be contributing to your weight loss. In simple terms Hyper = slim, hypo = fat. Another challenge in finding the right level for TSH. However 5.0 is still borderline and shouldn't be too high. I dont have a thyroid it having been removed for cancer nodules 35 yrs ago. Last year I found that my doseage of 175 microg was too much whereas 150 was too little so I found a sweet spot at 162.5 (daily). My PCP has worked with me on Rxs plus TSH tests but I took the lead on this one as he seemed clueless as to the relationship between thyroid and Arrythmias. EP didn't have much to add other than 'keep your TSH as high as possible' ; he didn't give me a target number.